{"title":"Sapphire","description":"\u003cp\u003eSapphire is one of the world's most recognized colored gemstones. Its name immediately suggests blue, but sapphire occurs in an extraordinary range of colors — from pink, yellow and green to purple, orange and colorless.\u003c\/p\u003e\u003cp\u003eEvery sapphire below has been selected for the quality of its color first. Weight, origin and treatment history are disclosed on each listing.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/pages\/sapphire\"\u003e\u003cstrong\u003eRead our full sapphire guide →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"1-27-ct-unheated-cambodian-royal-blue-sapphire","title":"1.27 ct Unheated Cambodian Royal Blue Sapphire","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA richly saturated natural sapphire with intense vivid-blue color and a refined antique oval silhouette. This 1.27 ct stone combines strong transparency, documented Cambodian origin and an unheated condition, with a Professional Gem Sciences Laboratory “PGS-type Royal Blue” color designation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.27 ct\u003cbr\u003eShape \/ Cut: Oval Mixed Cut\u003cbr\u003eMeasurements: 6.38 × 5.56 × 4.06 mm\u003cbr\u003eColor: Vivid Blue\u003cbr\u003eSpecial Color Designation: PGS-type Royal Blue\u003cbr\u003eTransparency: Transparent\u003cbr\u003eClarity Grade: Slightly Included\u003cbr\u003ePolish: Very Good\u003cbr\u003eSymmetry: Very Good\u003cbr\u003eOverall Cut Grade: Very Well Made\u003cbr\u003eGeographic Origin: Cambodia\u003cbr\u003eTreatment: None — no gemological evidence of heat present\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTreatment \u0026amp; Origin Disclosure\u003c\/strong\u003e\u003cbr\u003eProfessional Gem Sciences Laboratory identified the sapphire as Cambodian in origin and reported no gemological evidence of heat treatment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLaboratory Documentation\u003c\/strong\u003e\u003cbr\u003eAccompanied by Professional Gem Sciences Laboratory Report No. 44080102, dated October 11, 2019.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and well suited to jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, laboratory documentation, treatment and origin disclosures.\u003c\/p\u003e","brand":"otzera","offers":[{"title":"Default Title","offer_id":50974865490167,"sku":"7326518","price":2450.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/1-27-ct-cambodian-royal-blue-sapphire-angle-2_97ec3f4f-bb46-45cf-9db6-05afdd3e6d99.jpg?v=1787653431"},{"product_id":"2-41-ct-unheated-australian-blue-sapphire","title":"2.41 ct Unheated Australian Blue Sapphire — GIA Report","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eThis distinctive 2.41 ct natural sapphire from Australia is fashioned as a cushion sugarloaf cabochon, giving it a sculptural high-domed profile and softly rounded square outline. Its appeal combines a distinctive cabochon form, documented Australian origin and an unheated treatment status.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Sapphire\u003cbr\u003eSpecies: Natural Corundum\u003cbr\u003eWeight: 2.41 ct\u003cbr\u003eShape \/ Cut: Cushion Sugarloaf Cabochon\u003cbr\u003eMeasurements: 7.33 × 7.28 × 4.56 mm\u003cbr\u003eColor: Blue\u003cbr\u003eTransparency: Transparent\u003cbr\u003eOrigin: Australia\u003cbr\u003eTreatment: No indications of heating\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTreatment \u0026amp; Origin Disclosure\u003c\/strong\u003e\u003cbr\u003eGIA describes the stone as transparent blue natural corundum of Australian geographic origin and reports no indications of heating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLaboratory Documentation\u003c\/strong\u003e\u003cbr\u003eAccompanied by GIA Sapphire Origin Report No. 5201859064, dated February 1, 2020.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, GIA documentation, and treatment and origin disclosures.\u003c\/p\u003e","brand":"otzera","offers":[{"title":"Default Title","offer_id":50983384285431,"sku":"3509645","price":2150.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/otzera-2-41ct-australian-blue-sapphire-sugarloaf-front_b16d7dd7-5a50-4b18-a514-412a8e23d3cc.jpg?v=1789010235"},{"product_id":"2-30-ct-blue-sapphire","title":"2.30 ct Blue Sapphire","description":"\u003cp\u003eThis richly colored natural sapphire weighs \u003cstrong\u003e2.30 carats\u003c\/strong\u003e and displays a dark, slightly over-saturated blue. Cut into a classic oval mixed shape, the stone combines a refined outline with crisp faceting that draws light across its surface and emphasizes its dramatic color.\u003c\/p\u003e\n\u003cp\u003eMeasuring \u003cstrong\u003e9.08 × 6.88 × 4.32 mm\u003c\/strong\u003e, the sapphire has an attractive face-up presence and balanced proportions. \u003c\/p\u003e\n\u003cp\u003eThe stone has undergone \u003cstrong\u003eheat treatment\u003c\/strong\u003e, the widely accepted enhancement used in the sapphire market to improve color. \u003c\/p\u003e\n\u003ch3\u003eGemstone Details\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Natural Blue Sapphire\u003cbr\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Corundum\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.30 carats\u003cbr\u003e\u003cstrong\u003eShape:\u003c\/strong\u003e Oval Mixed Cut\u003cbr\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 9.08 × 6.88 × 4.32 mm\u003cbr\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Dark Blue\u003cbr\u003e\u003cstrong\u003ePolish:\u003c\/strong\u003e Very Good\u003cbr\u003e\u003cstrong\u003eSymmetry:\u003c\/strong\u003e Very Good\u003cbr\u003e\u003cstrong\u003eOverall Cut Grade:\u003c\/strong\u003e Very Well Made\u003cbr\u003e\u003cstrong\u003eEnhancement:\u003c\/strong\u003e Heat\u003cbr\u003e\u003cstrong\u003eStability:\u003c\/strong\u003e Excellent\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eOtzera Collector’s Note\u003c\/h3\u003e\n\u003cp\u003eWhile overdark and heat enhanced, this sapphire weighs over two carats making it a solid entry level sapphire for new collectors looking to build their collections.\u003c\/p\u003e","brand":"otzera","offers":[{"title":"Default Title","offer_id":50983409746167,"sku":"6230574","price":350.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/2.30sapphire6.png?v=1786018865"},{"product_id":"4-20-carat-vivid-yellow-sapphire","title":"4.20 ct Vivid Yellow Sapphire","description":"\u003cp\u003e\u003cstrong\u003eNatural · Clean · Very Well Made Oval Cut\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis exceptional natural yellow sapphire combines three qualities that are especially compelling to collectors: \u003cstrong\u003eintense color, clean clarity, and a well-proportioned cut at more than four carats\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIts primary color is described as \u003cstrong\u003evivid slightly orangish yellow\u003c\/strong\u003e, producing a rich, saturated appearance with flashes of golden yellow, amber, and warm citrus. The subtle orange influence adds depth and character, distinguishing the stone from lighter or more commercially common yellow sapphires. Its color is energetic and immediately noticeable, giving the gemstone a strong visual identity both at rest and in motion.\u003c\/p\u003e\n\u003cp\u003eWeighing \u003cstrong\u003e4.20 carats\u003c\/strong\u003e, the sapphire has substantial collector presence. Its balanced oval outline and mixed cutting style create a classic appearance while preserving the stone’s individual personality. The report assigns \u003cstrong\u003eVery Good\u003c\/strong\u003e grades for both symmetry and proportions, with an overall assessment of \u003cstrong\u003eVery Well Made\u003c\/strong\u003e—an important distinction for a gemstone of this size and depth.\u003c\/p\u003e\n\u003cp\u003eThe sapphire is graded \u003cstrong\u003eVery Slightly Included\u003c\/strong\u003e, resulting in an attractively clean face-up appearance. This clarity allows its vibrant color and internal brilliance to remain the dominant visual features, without distracting inclusions competing for attention. \u003c\/p\u003e\n\u003cp\u003eMost significantly, stone has great life to it. Its strong cutting are considerably more difficult to find than routine material. The combination of vivid color, size, transparency, and proportion gives this stone particularly strong desirability as a standalone collectible.\u003c\/p\u003e\n\u003ch3\u003eWhy Otzera Selected It\u003c\/h3\u003e\n\u003cp\u003eThis sapphire was selected for the completeness of its presentation. Many yellow sapphires offer either size, color, or clarity; this stone brings all three together in a well-made oval weighing more than four carats.\u003c\/p\u003e\n\u003cp\u003eIts vivid color is unusually expressive, while the clean clarity and balanced proportions allow that color to be appreciated without compromise. \u003c\/p\u003e\n\u003ch3\u003eGemstone Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Natural Yellow Sapphire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMineral Species:\u003c\/strong\u003e Natural Corundum\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.20 carats\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 10.64 × 7.58 × 6.01 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCutting Style:\u003c\/strong\u003e Mixed Cut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Vivid Slightly Orangish Yellow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eClarity:\u003c\/strong\u003e Very Slightly Included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePolish:\u003c\/strong\u003e Good\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSymmetry:\u003c\/strong\u003e Very Good\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProportions:\u003c\/strong\u003e Very Good\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOverall Cut Assessment:\u003c\/strong\u003e Very Well Made\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTable:\u003c\/strong\u003e 42%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTotal Depth:\u003c\/strong\u003e 79.3%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnhancement:\u003c\/strong\u003e Standard Heat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eStability: \u003c\/strong\u003eExcellent\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCollector Appeal\u003c\/h3\u003e\n\u003cp\u003eThe sapphire’s desirability rests on the combination of its \u003cstrong\u003evivid yellow color, clean appearance, substantial weight, and successful cutting\u003c\/strong\u003e. At 4.20 carats, it has the scale to anchor a serious gemstone collection while remaining beautifully proportioned and visually refined.\u003c\/p\u003e\n\u003ch3\u003eCare and Handling\u003c\/h3\u003e\n\u003cp\u003eSapphire is one of the most durable natural gemstones and is well suited for jewelry use. Clean with warm water, mild soap, and a soft brush. Although resistant to everyday wear, the stone should still be protected from sharp impacts and abrasive contact. Have it examined by a qualified jeweler before setting.\u003c\/p\u003e","brand":"otzera","offers":[{"title":"Default Title","offer_id":50985774940407,"sku":"1547363","price":1895.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/4.20yellowsapphirea.png?v=1785415559"},{"product_id":"4-98-carat-antique-ceylon-yellow-sapphire","title":"4.98 ct Antique Ceylon Yellow Sapphire","description":"\u003cp\u003e\u003cstrong\u003eNatural · Unheated · Sri Lankan Origin\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis natural yellow sapphire is a distinctive antique stone with the individuality and physical character that collectors often seek in older-cut gemstones. Weighing \u003cstrong\u003e4.98 carats\u003c\/strong\u003e, it displays a soft light-yellow color and is accompanied by a laboratory report identifying its geographic origin as \u003cstrong\u003eSri Lanka, historically known as Ceylon\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eRather than following the balanced proportions expected of a modern precision cut, the sapphire has a notably deep, bottom-heavy profile. Its \u003cstrong\u003e81.4% total depth\u003c\/strong\u003e concentrates a substantial portion of the stone’s weight below the girdle, giving it a pronounced three-dimensional presence. This is not a conventionally proportional cut, and its symmetry is graded Fair. However, for the right collector, these irregularities are part of its appeal: they preserve the personality of an earlier cutting tradition and distinguish the stone from more standardized contemporary sapphires.\u003c\/p\u003e\n\u003cp\u003eThe gemstone’s mixed oval cut, softly rounded outline, and substantial pavilion create an unmistakably individual appearance. It feels like a stone shaped around the original crystal rather than cut to conform to a modern commercial template.\u003c\/p\u003e\n\u003cp\u003eMost importantly, the sapphire is \u003cstrong\u003eunenhanced\u003c\/strong\u003e, with no evidence of heat treatment. Natural, unheated yellow sapphires from Sri Lanka are desirable to collectors who value geographic origin, traditional cutting, and minimal intervention.\u003c\/p\u003e\n\u003ch3\u003eWhy Otzera Selected It \u003c\/h3\u003e\n\u003cp\u003eThis sapphire was selected for its authenticity and character rather than technical perfection. Its collectible appeal rests on the combination of:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAntique cutting character\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSri Lankan—Ceylon—origin\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo evidence of heat treatment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA substantial weight approaching five carats\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAn unusually deep profile that clearly separates it from conventional modern cuts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe bulky pavilion is an honest and visible part of the stone. Some buyers may regard it as inefficient cutting, while others will appreciate it as the defining characteristic that gives the sapphire its individuality and historic feel.\u003c\/p\u003e\n\u003ch3\u003eJyotish and Traditional Setting Appeal\u003c\/h3\u003e\n\u003cp\u003eFor buyers interested in \u003cstrong\u003eJyotish gemstone traditions\u003c\/strong\u003e, the sapphire’s exceptional depth may be particularly appealing. Jyotish-style rings are often designed with an open back so that the gemstone can make direct contact with the wearer’s skin. Because this stone has a deep pavilion, it may lend itself naturally to that type of custom setting.\u003c\/p\u003e\n\u003cp\u003eWithin Jyotish tradition, yellow sapphire is associated with Jupiter and is worn in the belief that it supports prosperity, wisdom, positive energy, and good fortune. These are traditional spiritual and astrological beliefs rather than scientifically established effects.\u003c\/p\u003e\n\u003ch3\u003eGemstone Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Natural Yellow Sapphire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMineral Species:\u003c\/strong\u003e Corundum\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.98 carats\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 9.75 × 7.98 × 6.50 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCutting Style:\u003c\/strong\u003e Mixed Cut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Light Yellow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGeographic Origin:\u003c\/strong\u003e Sri Lanka (Ceylon)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePolish:\u003c\/strong\u003e Good\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSymmetry:\u003c\/strong\u003e Fair\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOverall Cut Assessment:\u003c\/strong\u003e Well Made\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTable:\u003c\/strong\u003e 45%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTotal Depth:\u003c\/strong\u003e 81.4%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnhancement:\u003c\/strong\u003e None detected; no evidence of heat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCertification\u003c\/h3\u003e\n\u003cp\u003eAccompanied by \u003cstrong\u003eCarte Blu Report No. 44080114\u003c\/strong\u003e, dated \u003cstrong\u003eSeptember 23, 2019\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eCare and Setting\u003c\/h3\u003e\n\u003cp\u003eSapphire is highly durable and suitable for regular jewelry wear. Because of this stone’s unusually deep pavilion, it should be evaluated by an experienced jeweler before setting. A custom mounting will likely provide the best balance of protection, comfort, and presentation, particularly when creating an open-backed Jyotish-style ring.\u003c\/p\u003e","brand":"otzera","offers":[{"title":"Default Title","offer_id":50985945858295,"sku":"9245174","price":1175.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/4.98YellowSapphire1.png?v=1785419359"},{"product_id":"4-52-carat-unheated-ceylon-purple-sapphire","title":"4.52 ct Unheated Ceylon Purple Sapphire","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eThis 4.52 ct natural purple sapphire is a substantial and highly individual collector stone, combining unenhanced color, documented Sri Lankan origin, notable size and authentic antique cutting character. Its antique cushion mixed cut has a deep profile, gently irregular outline and visible asymmetry that reflect traditional weight-retaining cutting priorities rather than modern standardized proportions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Purple Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 4.52 ct\u003cbr\u003eShape \/ Cut: Antique Cushion Mixed Cut\u003cbr\u003eMeasurements: 9.40 × 7.32 × 5.75 mm\u003cbr\u003eColor: Moderate Violet\u003cbr\u003eClarity: Moderately Included\u003cbr\u003ePolish: Good\u003cbr\u003eSymmetry: Good, with visible antique-cut irregularity\u003cbr\u003eOverall Cut Assessment: Well Made\u003cbr\u003eTable: 51%\u003cbr\u003eTotal Depth: 78.6%\u003cbr\u003eGeographic Origin: Sri Lanka (Ceylon)\u003cbr\u003eTreatment: None detected; no gemological evidence of heat\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTreatment \u0026amp; Origin Disclosure\u003c\/strong\u003e\u003cbr\u003eThe accompanying report identifies Sri Lankan (Ceylon) geographic origin and states that there is no gemological evidence of heat treatment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLaboratory Documentation\u003c\/strong\u003e\u003cbr\u003eAccompanied by Carte Blu Report No. 44090126, dated October 11, 2019.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProvenance \/ Collector Significance\u003c\/strong\u003e\u003cbr\u003eThe combination of origin, untreated status, antique cutting and weight above four carats gives the stone meaningful collector interest. Visible inclusions and irregularities are part of its natural character and historic-style presentation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is durable, but this stone’s inclusions and antique proportions should be considered before setting. A protective custom mounting is recommended for frequent wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, laboratory documentation, antique-cut characteristics, and treatment and origin disclosures.\u003c\/p\u003e","brand":"otzera","offers":[{"title":"Default Title","offer_id":50986012049655,"sku":"8786352","price":2745.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/purplesapphire.png?v=1786016839"},{"product_id":"purple-sapphire-otz-2026-01627","title":"1.85 ct Unheated Sri Lankan Purple Sapphire","description":"\u003cp\u003eSoft lavender-purple color and an unusual triangular shape give this 1.85 ct sapphire a distinctive collector appeal. The stone is unheated and from Sri Lanka, two details that add meaningful interest beyond its attractive face-up appearance.\u003c\/p\u003e\n\n\u003cp\u003eThe cut is generally well balanced and lively, while fine internal needles and a small cavity near the table edge are visible on closer inspection. These characteristics are reflected openly in its Otzera 50 evaluation rather than hidden from view.\u003c\/p\u003e\n\n\u003cp\u003eOtzera 50: 37\/50 — Distinguished\u003cbr\u003e\nWeight: 1.85 ct\u003cbr\u003e\nDimensions: 9.93 × 6.42 × 4.12 mm\u003cbr\u003e\nOrigin: Sri Lanka\u003cbr\u003e\nTreatment: None\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51034350387447,"sku":"OTZ-2026-01627","price":1250.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01627-a.jpg?v=1786961898"},{"product_id":"2-32-ct-natural-green-sapphire","title":"2.32 ct Green Round Brilliant Sapphire","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eThis 2.32 ct sapphire is defined by its unusually clean appearance and precise round brilliant cutting. Its body color is predominantly green, with a subtle blue influence visible from certain angles, giving the stone a distinctive and shifting face-up character.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Natural Green Sapphire\u003cbr\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Corundum\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.32 ct\u003cbr\u003e\u003cstrong\u003eShape \/ Cut:\u003c\/strong\u003e Round Brilliant\u003cbr\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 7.70–7.76 × 5.05 mm\u003cbr\u003e\u003cstrong\u003eTreatment:\u003c\/strong\u003e Heated\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eOtzera 50:\u003c\/strong\u003e 33\/50 — Collectible\u003cbr\u003e\u003cstrong\u003eFace-Up Performance:\u003c\/strong\u003e 75%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51137217167607,"sku":"OTZ-2026-01640","price":890.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01640-green-sapphire-4.png?v=1789009101"},{"product_id":"1-57-ct-natural-purple-sapphire","title":"1.57 ct Unheated Sri Lankan Purple Sapphire","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA lively purple sapphire with excellent clarity and the added appeal of untreated status and Sri Lankan provenance. At 1.57 carats, its oval modified brilliant cut gives the stone a bright, energetic face-up appearance, while only a minor fingerprint near the periphery is noted in the evaluation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Natural Purple Sapphire\u003cbr\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Corundum\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.57 ct\u003cbr\u003e\u003cstrong\u003eShape \/ Cut:\u003c\/strong\u003e Oval Modified Brilliant\u003cbr\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 7.56 × 6.36 × 4.09 mm\u003cbr\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e Sri Lanka\u003cbr\u003e\u003cstrong\u003eTreatment:\u003c\/strong\u003e None\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eOtzera 50:\u003c\/strong\u003e 37\/50 — Distinguished\u003cbr\u003e\u003cstrong\u003eFace-Up Performance:\u003c\/strong\u003e 75%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51137217790199,"sku":"OTZ-2026-01639","price":1560.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01639-purple-sapphire-3.png?v=1789009463"},{"product_id":"blue-sapphire-otz-2026-01644","title":"1.47 ct Unheated Yogo Sapphire — GIA Origin Report","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA rare American sapphire from Montana's famed Yogo Gulch, this 1.47 ct natural blue sapphire combines strong saturation and high transparency with the collector appeal of GIA-confirmed origin and no indications of heating. Faceted Yogo sapphires above one carat are notably scarce, making its size and locality the defining features of this stone.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.47 ct\u003cbr\u003eShape \/ Cut: Oval Modified Brilliant Cut\u003cbr\u003eMeasurements: 7.10 × 6.46 × 3.61 mm\u003cbr\u003eColor: Blue\u003cbr\u003eTransparency: Transparent\u003cbr\u003eOrigin: USA (Yogo Gulch), Montana\u003cbr\u003eTreatment: No indications of heating\u003cbr\u003eCondition: Surface scratches and abrasions are present; professional repolishing is recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: 36\/50 — Distinguished\u003cbr\u003eFace-Up Performance: 70%\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTreatment \u0026amp; Origin Disclosure\u003c\/strong\u003e\u003cbr\u003eGIA determined the geographic origin to be USA (Yogo Gulch) and reported no indications of heating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLaboratory Documentation\u003c\/strong\u003e\u003cbr\u003eAccompanied by GIA Sapphire Origin Report No. 5221467846, dated June 8, 2022.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProvenance \/ Collector Significance\u003c\/strong\u003e\u003cbr\u003eYogo sapphires are prized for their highly specific Montana provenance and are typically encountered in small sizes. A faceted Yogo above one carat is particularly uncommon, giving this stone meaningful locality and size appeal for collectors of American gemstones.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is durable for jewelry wear, but this stone currently shows notable facet-surface wear. Professional repolishing is recommended before setting. If repolished, the stone should be reweighed and remeasured and its documentation reviewed for consistency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, GIA documentation, treatment and origin disclosures, condition notes and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51150481522935,"sku":"OTZ-2026-01644","price":9850.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01644-yogo-sapphire-1.jpg?v=1789159424"},{"product_id":"2-82-ct-natural-pinkish-purple-sapphire-gia-report","title":"2.82 ct Natural Pinkish Purple Sapphire — GIA Report","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA substantial 2.82 ct natural sapphire with a lively pinkish-purple color and an elongated cushion outline. Its transparent appearance and bright modified brilliant cutting give it strong visual presence, while the GIA report confirms natural corundum and heat treatment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Pinkish Purple Sapphire\u003cbr\u003eSpecies: Natural Corundum\u003cbr\u003eWeight: 2.82 ct\u003cbr\u003eShape \/ Cut: Cushion Modified Brilliant Cut\u003cbr\u003eMeasurements: 9.36 × 6.71 × 5.13 mm\u003cbr\u003eTreatment: Heated\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: 33\/50 — Collectible\u003cbr\u003eFace-Up Performance: 75%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eGIA Report No. 2191856139 identifies the stone as natural corundum, sapphire, pinkish purple, heated.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLaboratory Documentation\u003c\/strong\u003e\u003cbr\u003eAccompanied by GIA Sapphire Report No. 2191856139, dated November 27, 2018.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eCorundum is highly durable and suitable for everyday jewelry with normal care. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, laboratory documentation and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51159530701047,"sku":"OTZ-2026-01652","price":3650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/psapphire-1.jpg?v=1792916709"},{"product_id":"4-06-ct-ceylon-blue-sapphire-gia-origin-report","title":"4.06 ct Ceylon Blue Sapphire — GIA Origin Report","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA substantial 4.06 ct natural blue sapphire from Sri Lanka with a classic cushion mixed cut and strong face-up presence. Its saturated blue appearance, excellent transparency and documented Ceylon origin make provenance and size meaningful parts of its collector appeal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Natural Corundum\u003cbr\u003eWeight: 4.06 ct\u003cbr\u003eShape \/ Cut: Cushion Mixed Cut\u003cbr\u003eMeasurements: 9.92 × 7.16 × 5.41 mm\u003cbr\u003eOrigin: Sri Lanka (Ceylon)\u003cbr\u003eTreatment: Heated\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: 39\/50 — Distinguished\u003cbr\u003eFace-Up Performance: 80%\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTreatment \u0026amp; Origin Disclosure\u003c\/strong\u003e\u003cbr\u003eGIA Sapphire Origin Report 1216818065 identifies the stone as natural corundum, blue sapphire, of Sri Lankan geographic origin, heated.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLaboratory Documentation\u003c\/strong\u003e\u003cbr\u003eAccompanied by GIA Sapphire Origin Report No. 1216818065, dated June 30, 2021.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for everyday jewelry with normal care. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, origin and treatment disclosures, and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51159530766583,"sku":"OTZ-2026-01654","price":8900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01654-ceylon-blue-sapphire-1.jpg?v=1789354081"},{"product_id":"1-38-ct-ceylon-yellow-sapphire","title":"1.38 ct Ceylon Yellow Sapphire","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA vivid natural yellow sapphire from Sri Lanka with a bright oval mixed cut and strong face-up performance. At 1.38 ct, saturated yellow color and Ceylon provenance are the principal collector attributes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Yellow Sapphire\u003cbr\u003eSpecies: Natural Corundum\u003cbr\u003eWeight: 1.38 ct\u003cbr\u003eShape \/ Cut: Oval Mixed Cut\u003cbr\u003eMeasurements: 7.90 × 5.39 × 3.84 mm\u003cbr\u003eOrigin: Sri Lanka (Ceylon)\u003cbr\u003eTreatment: Heated\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: 36\/50 — Distinguished\u003cbr\u003eFace-Up Performance: 90%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and well suited to jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51159570678007,"sku":"OTZ-2026-01648","price":825.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01648-ceylon-yellow-sapphire-1.jpg?v=1789353759"},{"product_id":"1-24-ct-unheated-ceylon-yellow-sapphire","title":"1.24 ct Unheated Ceylon Yellow Sapphire","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA natural yellow sapphire from Sri Lanka with a delicate sunny color, elegant pear outline and the added collector appeal of unheated status. At 1.24 ct, it offers an easy-to-wear size with distinctive Ceylon provenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Natural Yellow Sapphire\u003cbr\u003e\n\u003cstrong\u003eSpecies:\u003c\/strong\u003e Corundum\u003cbr\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.24 ct\u003cbr\u003e\n\u003cstrong\u003eShape \/ Cut:\u003c\/strong\u003e Pear Mixed Cut\u003cbr\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 7.70 × 4.97 × 3.93 mm\u003cbr\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Sri Lanka (Ceylon)\u003cbr\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e Unheated\u003cbr\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e Natural feather and fingerprint inclusions visible on close inspection\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOtzera 50:\u003c\/strong\u003e 33\/50 — Collectible\u003cbr\u003e\n\u003cstrong\u003eFace-Up Performance:\u003c\/strong\u003e 60%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProvenance \/ Story\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAcquisition notes attribute the stone to the Nivithigala mining region of Sri Lanka.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSapphire is highly durable and well suited to jewelry wear. Clean with warm water, mild soap and a soft brush; avoid harsh chemicals and sudden temperature changes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, provenance notes and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51188916322551,"sku":"OTZ-2026-01671","price":565.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01671-unheated-yellow-sapphire-1.jpg?v=1790472930"},{"product_id":"2-77-ct-unheated-australian-parti-sapphire-radiant-cut","title":"2.77 ct Unheated Australian Parti Sapphire — Radiant Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA highly distinctive Australian parti-colored sapphire with deep rich blue, a concentrated yellow zone and flashes of green. The nearly square radiant cut is remarkably well made, giving the stone strong structure, crisp symmetry and lively optical performance while preserving its natural multi-color zoning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Parti-Colored Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 2.77 ct\u003cbr\u003eShape \/ Cut: Radiant Cut\u003cbr\u003eMeasurements: 8.05 × 7.99 × 5.26 mm \u003cbr\u003eColor: Deep Blue, Yellow and Green Parti-Color\u003cbr\u003eOrigin: Australia\u003cbr\u003eTreatment: No Heat\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e40 — Distinguished\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 83%\u003cbr\u003eThe stone received particularly strong marks for cut and optical performance, reflecting its successful radiant-style faceting and balanced presentation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment \u0026amp; Origin Disclosure\u003c\/strong\u003e\u003cbr\u003eThe current Otzera evaluation records Australian origin and no heat treatment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, origin and treatment disclosures, and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51218158518519,"sku":"OTZ-2026-01697","price":4925.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01697-parti-sapphire-1.jpg?v=1790377050"},{"product_id":"1-68-ct-blue-sapphire-round-brilliant-cut","title":"1.68 ct Blue Sapphire — Round Brilliant Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA lively 1.68 ct blue sapphire with a bright round brilliant presentation and strong face-up performance. The stone shows an attractive medium-to-deep blue appearance with hints of green visible from certain directions, while its round outline gives it a classic, highly wearable look.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.68 ct\u003cbr\u003eShape \/ Cut: Round Brilliant Cut\u003cbr\u003eMeasurements: 7.03–7.00 × 4.60 mm\u003cbr\u003eColor: Blue with subtle green directional flashes\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e35 — Distinguished\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 90%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221585297655,"sku":"OTZ-2026-01701","price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01701-blue-sapphire-1.jpg?v=1790452526"},{"product_id":"1-83-ct-blue-green-sapphire-rectangular-step-cut","title":"1.83 ct Blue-Green Sapphire — Rectangular Step Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA distinctive blue-green sapphire with a clean rectangular step-cut outline. The cut emphasizes broad flashes and linear reflections, giving the stone an architectural look and a more unusual presentation than a conventional brilliant-style sapphire.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.83 ct\u003cbr\u003eShape \/ Cut: Rectangular Step Cut\u003cbr\u003eMeasurements: 8.06 × 5.73 × 2.95 mm\u003cbr\u003eColor: Blue-Green\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e27 — Discovery\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 53%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221585428727,"sku":"OTZ-2026-01702","price":650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01702-blue-sapphire-1.jpg?v=1790452535"},{"product_id":"1-51-ct-blue-sapphire-oval-mixed-cut","title":"1.51 ct Bright Blue Sapphire — Oval Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA classic oval blue sapphire with a pleasing medium-to-deep blue appearance and a balanced face-up spread. The oval mixed cut gives the stone a familiar, versatile shape while retaining enough internal contrast to create lively flashes across the face.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.51 ct\u003cbr\u003eShape \/ Cut: Oval Mixed Cut\u003cbr\u003eMeasurements: 7.70 × 5.81 × 4.00 mm\u003cbr\u003eColor: Blue\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e33 — Collectible\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 75%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221585527031,"sku":"OTZ-2026-01703","price":995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01703-blue-sapphire-1.jpg?v=1790452545"},{"product_id":"1-37-ct-vivid-orange-sapphire-oval-mixed-cut","title":"1.37 ct Vivid Orange Sapphire — Oval Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA striking orange sapphire with vivid, highly saturated color and excellent brightness. The stone shows a rich golden-orange face-up appearance that is especially eye-catching in this size range, while the elongated oval outline gives it a clean, elegant profile.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Orange Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.37 ct\u003cbr\u003eShape \/ Cut: Oval Mixed Cut\u003cbr\u003eMeasurements: 8.54 × 5.51 × 3.21 mm\u003cbr\u003eColor: Vivid Orange\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e34 — Collectible\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 85%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221585658103,"sku":"OTZ-2026-01704","price":1595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01704-orange-sapphire-1.jpg?v=1790452555"},{"product_id":"1-76-ct-deep-blue-sapphire-marquise-cut","title":"1.76 ct Deep Blue Sapphire — Marquise Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA long, elegant marquise sapphire with a deep blue appearance and a dramatic elongated silhouette. The stone presents a darker face-up look, with flashes of brighter blue visible along the ends and facet junctions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.76 ct\u003cbr\u003eShape \/ Cut: Marquise\u003cbr\u003eMeasurements: 11.60 × 5.02 × 3.83 mm\u003cbr\u003eColor: Deep Blue\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e25 — Discovery\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 45%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221585756407,"sku":"OTZ-2026-01705","price":650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01705-blue-sapphire-1.jpg?v=1790452563"},{"product_id":"2-13-ct-parti-colored-sapphire-triangular-mixed-cut","title":"2.13 ct Parti-Colored Sapphire — Triangular Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eAn unusual parti-colored sapphire with a broad triangular outline and cool blue-to-teal color variation across the face. The triangular mixed cut gives the stone a sculptural, contemporary character while emphasizing the natural tonal zoning visible from different angles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Parti-Colored Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 2.13 ct\u003cbr\u003eShape \/ Cut: Triangular Mixed Cut\u003cbr\u003eMeasurements: 10.48 × 6.82 × 4.44 mm\u003cbr\u003eColor: Blue to Teal Parti-Color\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e28 — Collectible\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 70%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221585887479,"sku":"OTZ-2026-01706","price":1250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01706-parti-sapphire-1.jpg?v=1790452574"},{"product_id":"1-41-ct-blue-sapphire-pear-mixed-cut","title":"1.41 ct Blue Sapphire — Pear Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA saturated blue sapphire with a graceful pear-shaped outline and a rich face-up color. The pear mixed cut gives the stone a classic silhouette while the concentrated blue body color creates strong visual presence for its 1.41 ct weight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.41 ct\u003cbr\u003eShape \/ Cut: Pear Mixed Cut\u003cbr\u003eMeasurements: 8.51 × 6.07 × 3.54 mm\u003cbr\u003eColor: Rich Blue\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e34 — Collectible\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 73%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221586018551,"sku":"OTZ-2026-01707","price":944.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01707-blue-sapphire-1.jpg?v=1790452583"},{"product_id":"0-92-ct-bright-pink-sapphire-oval-mixed-cut","title":"0.92 ct Bright Pink Sapphire — Oval Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA bright, strongly saturated pink sapphire in a classic oval mixed cut. At just under one carat, the stone has a vivid face-up presence and a lively pink appearance that makes it well suited to a colorful center-stone design.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Pink Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 0.92 ct\u003cbr\u003eShape \/ Cut: Oval Mixed Cut\u003cbr\u003eMeasurements: 6.86 × 4.90 × 2.96 mm\u003cbr\u003eColor: Bright Pink\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e33 — Collectible\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 78%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221803663607,"sku":"OTZ-2026-01709","price":995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01709-pink-sapphire-1_7a46afb5-6bff-4b1d-85ee-b4f94b88043f.jpg?v=1790459320"},{"product_id":"0-97-ct-pink-sapphire-triangular-mixed-cut","title":"0.97 ct Pink Sapphire — Triangular Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA lively pink sapphire with an unusual triangular outline and bright face-up color. The near-one-carat size and less common triangular mixed cut give this stone a playful, contemporary character while retaining strong collector appeal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Pink Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 0.97 ct\u003cbr\u003eShape \/ Cut: Triangular Mixed Cut\u003cbr\u003eMeasurements: 6.49 × 6.39 × 2.73 mm\u003cbr\u003eColor: Bright Pink\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e34 — Collectible\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 78%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221803696375,"sku":"OTZ-2026-01710","price":1095.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01710-pink-sapphire-1.jpg?v=1790472002"},{"product_id":"1-02-ct-blue-sapphire-oval-mixed-cut","title":"1.02 ct Blue Sapphire — Oval Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA bright one-carat blue sapphire with a classic oval outline and lively face-up appearance. The stone combines attractive blue color with balanced proportions and an 83% face-up performance index, giving it a clean, versatile presentation for jewelry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.02 ct\u003cbr\u003eShape \/ Cut: Oval Mixed Cut\u003cbr\u003eMeasurements: 7.08 × 5.03 × 3.49 mm\u003cbr\u003eColor: Blue\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e33 — Collectible\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 83%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221803892983,"sku":"OTZ-2026-01713","price":895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01713-blue-sapphire-1.jpg?v=1790472088"},{"product_id":"1-37-ct-deep-blue-sapphire-emerald-cut","title":"1.37 ct Deep Blue Sapphire — Emerald Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA deep blue sapphire with a crisp emerald-cut outline and a bold, architectural look. The step-cut geometry gives the stone a distinct personality, with broad flashes framed by its dark blue body color.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.37 ct\u003cbr\u003eShape \/ Cut: Emerald Cut \u003cbr\u003eMeasurements: 7.00 × 5.06 × 3.62 mm\u003cbr\u003eColor: Deep Blue\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e26 — Discovery\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 65%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221803925751,"sku":"OTZ-2026-01714","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01714-blue-sapphire-1.jpg?v=1790472042"},{"product_id":"1-20-ct-blue-sapphire-oval-mixed-cut","title":"1.20 ct Blue Sapphire — Oval Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA medium-blue sapphire in a slender oval mixed cut. Its softer color and elongated proportions give the stone an understated look, making it a versatile option for a classic ring or pendant design. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.20 ct\u003cbr\u003eShape \/ Cut: Oval Mixed Cut\u003cbr\u003eMeasurements: 7.86 × 4.82 × 3.06 mm\u003cbr\u003eColor: Medium Blue\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e22 — Discovery\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 48%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221803958519,"sku":"OTZ-2026-01715","price":495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01715-blue-sapphire-1.jpg?v=1790463259"},{"product_id":"1-09-ct-deep-blue-sapphire-pear-mixed-cut","title":"1.09 ct Deep Blue Sapphire — Pear Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA deep blue sapphire with a pear-shaped outline and concentrated body color. The pear mixed cut gives the stone a classic silhouette, while its darker tone creates a more dramatic overall appearance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 1.09 ct\u003cbr\u003eShape \/ Cut: Pear Mixed Cut\u003cbr\u003eMeasurements: 7.36 × 6.03 × 3.05 mm\u003cbr\u003eColor: Deep Blue\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e23 — Discovery\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 48%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment Disclosure\u003c\/strong\u003e\u003cbr\u003eHeat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221803991287,"sku":"OTZ-2026-01716","price":550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01716-blue-sapphire-1-enhanced.jpg?v=1790471797"},{"product_id":"1-35-ct-ceylon-yellow-sapphire-oval-mixed-cut","title":"1.35 ct Ceylon Yellow Sapphire — Oval Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA bright yellow sapphire from Sri Lanka with strong color saturation and a classic oval mixed cut. The stone was sourced from the Nivithigala region and shows a lively face-up appearance despite visible internal features typical of natural corundum.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Natural Yellow Sapphire\u003cbr\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Corundum\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.35 ct\u003cbr\u003e\u003cstrong\u003eShape \/ Cut:\u003c\/strong\u003e Oval Mixed Cut\u003cbr\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 8.14 × 5.68 × 3.28 mm\u003cbr\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Strong Yellow\u003cbr\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e Sri Lanka (Ceylon)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eOtzera 50:\u003c\/strong\u003e 34\/50 — Collectible\u003cbr\u003e\u003cstrong\u003eFace-Up Performance:\u003c\/strong\u003e 85%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment \u0026amp; Origin\u003c\/strong\u003e\u003cbr\u003eTraditional heat enhancement. Sourced from the Nivithigala region of Sri Lanka.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment information and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51221877129463,"sku":"OTZ-2026-01675","price":795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01675-yellow-sapphire-1.jpg?v=1790462169"},{"product_id":"2-73-ct-unheated-blue-sapphire-gia-report","title":"2.73 ct Unheated Blue Sapphire — GIA Report","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA 2.73 ct natural blue sapphire with an appealing antique cushion character and the added collector value of documented unheated status. The stone has a softly elongated cushion outline and a classic mixed cutting style that gives it an individual, vintage personality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Corundum\u003cbr\u003eWeight: 2.73 ct\u003cbr\u003eShape \/ Cut: Cushion Mixed Cut\u003cbr\u003eMeasurements: 8.94 × 6.90 × 5.15 mm\u003cbr\u003eColor: Blue\u003cbr\u003eTransparency: Transparent\u003cbr\u003eTreatment: No Indications of Heating\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003cbr\u003eOtzera 50: \u003cstrong\u003e35 — Distinguished\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance: 78%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLaboratory Documentation\u003c\/strong\u003e\u003cbr\u003eAccompanied by GIA Sapphire Report No. 6194856137, dated November 27, 2018.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving the gemstone's identifying details, O50 evaluation and GIA documentation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51222638002423,"sku":"OTZ-2026-01719","price":4950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01719-blue-sapphire-3.jpg?v=1790480762"},{"product_id":"1-03-ct-unheated-sri-lankan-blue-sapphire-oval-mixed-cut","title":"1.03 ct Unheated Sri Lankan Blue Sapphire — Oval Mixed Cut","description":"\u003ch3\u003eCollector's Note\u003c\/h3\u003e\u003cp\u003eA light violet-blue natural sapphire from Sri Lanka with an elegant elongated oval outline. Its unheated status adds collector interest, while the softly saturated color gives the stone a refined, understated appearance.\u003c\/p\u003e\u003ch3\u003eGemstone Details\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Natural Blue Sapphire\u003cbr\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Corundum\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.03 ct\u003cbr\u003e\u003cstrong\u003eShape \/ Cut:\u003c\/strong\u003e Oval Mixed Cut\u003cbr\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 7.01 × 4.93 × 3.03 mm\u003cbr\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e Sri Lanka (Ceylon)\u003c\/p\u003e\u003ch3\u003eO50 Collector Evaluation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eOtzera 50:\u003c\/strong\u003e 29 — Collectible\u003cbr\u003e\u003cstrong\u003eFace-Up Performance:\u003c\/strong\u003e 58%\u003c\/p\u003e\u003ch3\u003eTreatment \u0026amp; Origin\u003c\/h3\u003e\u003cp\u003eNo heat. Sri Lanka (Ceylon).\u003c\/p\u003e\u003ch3\u003eCare \u0026amp; Setting\u003c\/h3\u003e\u003cp\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\u003ch3\u003eDigital Gem Passport\u003c\/h3\u003e\u003cp\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment and origin information, and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51231739609335,"sku":"OTZ-2026-01729","price":895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01729-blue-sapphire-1.jpg?v=1790701796"},{"product_id":"1-12-ct-unheated-nivithigala-yellow-sapphire-pear-mixed-cut","title":"1.12 ct Unheated Nivithigala Yellow Sapphire — Pear Mixed Cut","description":"\u003ch3\u003eCollector's Note\u003c\/h3\u003e\u003cp\u003eA delicate yellow natural sapphire with an elongated pear mixed cut and an attractive Sri Lankan provenance. The stone comes from the Nivithigala region and is unheated, giving it added interest for collectors who value natural color and locality.\u003c\/p\u003e\u003ch3\u003eGemstone Details\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Natural Yellow Sapphire\u003cbr\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Corundum\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.12 ct\u003cbr\u003e\u003cstrong\u003eShape \/ Cut:\u003c\/strong\u003e Pear Mixed Cut\u003cbr\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 9.04 × 4.89 × 3.13 mm\u003cbr\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e Nivithigala region, Sri Lanka (Ceylon)\u003c\/p\u003e\u003ch3\u003eO50 Collector Evaluation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eOtzera 50:\u003c\/strong\u003e 27 — Discovery\u003cbr\u003e\u003cstrong\u003eFace-Up Performance:\u003c\/strong\u003e 48%\u003c\/p\u003e\u003ch3\u003eTreatment \u0026amp; Origin\u003c\/h3\u003e\u003cp\u003eNo heat. From the Nivithigala region of Sri Lanka.\u003c\/p\u003e\u003ch3\u003eCare \u0026amp; Setting\u003c\/h3\u003e\u003cp\u003eSapphire is highly durable and suitable for jewelry wear. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\u003ch3\u003eDigital Gem Passport\u003c\/h3\u003e\u003cp\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment and origin information, and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51231739773175,"sku":"OTZ-2026-01732","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01732-yellow-sapphire-1.jpg?v=1790701750"},{"product_id":"1-02-ct-sri-lankan-pink-sapphire-gia-origin-report","title":"1.02 ct Sri Lankan Pink Sapphire — GIA Origin Report","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA bright, strongly saturated pink sapphire from Sri Lanka with a compact cushion modified brilliant cut and lively face-up presence. At just over one carat, the stone combines vivid color with documented Ceylon origin and GIA identification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGemstone: Natural Pink Sapphire\u003cbr\u003eSpecies: Natural Corundum\u003cbr\u003eWeight: 1.02 ct\u003cbr\u003eShape \/ Cut: Cushion Modified Brilliant\u003cbr\u003eMeasurements: 5.88 × 5.86 × 3.41 mm\u003cbr\u003eOrigin: Sri Lanka (Ceylon)\u003cbr\u003eClarity: Small crystals visible under magnification\u003cbr\u003eTreatment: Heated\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOtzera 50: 37\/50 — Distinguished\u003cbr\u003eFace-Up Performance: 88%\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTreatment \u0026amp; Origin\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGIA Sapphire Origin Report 1242074871 identifies natural corundum, sapphire, pink, of Sri Lankan geographic origin, with indications of heating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLaboratory Documentation\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAccompanied by GIA Sapphire Origin Report No. 1242074871, dated September 25, 2026.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSapphire is highly durable and suitable for everyday jewelry with normal care. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, laboratory documentation, treatment and origin disclosures, and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51236517904631,"sku":"OTZ-2026-01751","price":2895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01751-1.jpg?v=1790793397"},{"product_id":"1-31-ct-blue-sapphire-oval-mixed-cut","title":"1.31 ct Blue Sapphire — Oval Mixed Cut","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA softly colored 1.31 ct natural blue sapphire in an elongated oval mixed cut. The stone has a bright, open appearance with noticeable windowing; that optical trade-off is reflected in its Discovery-level O50 evaluation rather than obscured in the presentation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGemstone: Natural Blue Sapphire\u003cbr\u003eSpecies: Natural Corundum\u003cbr\u003eWeight: 1.31 ct\u003cbr\u003eShape \/ Cut: Oval Mixed Cut\u003cbr\u003eMeasurements: 7.90 × 5.89 × 3.08 mm\u003cbr\u003eColor: Blue\u003cbr\u003eTransparency: Transparent\u003cbr\u003eTreatment: Heated\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOtzera 50: 25\/50 — Discovery\u003cbr\u003eFace-Up Performance: 53%\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTreatment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHeat treatment is recorded for this sapphire.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSapphire is highly durable and suitable for everyday jewelry with normal care. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51236593598711,"sku":"OTZ-2026-01759","price":495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01759-1.jpg?v=1790796841"},{"product_id":"4-04-ct-tanzanian-color-change-sapphire-gia-origin-report","title":"4.04 ct Tanzanian Color-Change Sapphire — GIA Origin Report","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA substantial 4.04 ct natural sapphire from Tanzania with a GIA-documented color change from green-blue to purple under different lighting. The oval mixed cut gives the stone a broad face-up presentation; its deeper tone is balanced by the strength of the color-change phenomenon and the added collector value of documented unheated status.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGemstone: Natural Color-Change Sapphire\u003cbr\u003eSpecies: Natural Corundum\u003cbr\u003eWeight: 4.04 ct\u003cbr\u003eShape \/ Cut: Oval Mixed Cut\u003cbr\u003eMeasurements: 10.46 × 7.33 × 5.69 mm\u003cbr\u003eOrigin: Tanzania\u003cbr\u003eColor: Green-blue changing to purple\u003cbr\u003eTransparency: Transparent\u003cbr\u003eTreatment: No indications of heating\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eO50 Collector Evaluation\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOtzera 50: 36\/50 — Distinguished\u003cbr\u003eFace-Up Performance: 65%\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTreatment \u0026amp; Origin\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGIA Sapphire Origin Report No. 2245074853 identifies natural sapphire of Tanzanian geographic origin with no indications of heating and documents the stone's color-change behavior.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLaboratory Documentation\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAccompanied by GIA Sapphire Origin Report No. 2245074853, dated September 25, 2026.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSapphire is highly durable and suitable for jewelry wear with normal care. Clean with warm water, mild soap and a soft brush.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAccompanied by an Otzera Digital Gem Passport preserving its identifying details, laboratory documentation, origin and treatment disclosures, color-change phenomenon and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51236633084151,"sku":"OTZ-2026-01754","price":6495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/upload-1792916687092.jpg?v=1792916688"},{"product_id":"1-51-ct-blue-sapphire-oval-mixed-cut-1","title":"1.51 ct Deep Blue Sapphire — Oval Mixed Cut","description":"\u003ch2\u003eCollector’s Note\u003c\/h2\u003e\u003cp\u003eDeep blue color and a graceful oval shape give this 1.51 ct natural sapphire a classic appeal. Its mixed cut reveals blue flashes as the viewing angle changes, and the elongated outline offers an elegant presence at 7.9 mm long. A versatile stone for a personal collection or a bespoke ring or pendant.\u003c\/p\u003e\u003ch2\u003eGemstone Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGemstone: Natural blue sapphire\u003c\/li\u003e\n\u003cli\u003eSpecies: Corundum\u003c\/li\u003e\n\u003cli\u003eWeight: 1.51 ct\u003c\/li\u003e\n\u003cli\u003eShape \/ Cut: Oval Mixed Cut\u003c\/li\u003e\n\u003cli\u003eMeasurements: 7.9 x 6.0 x 3.5 mm\u003c\/li\u003e\n\u003cli\u003eTreatment: Heated\u003c\/li\u003e\n\u003cli\u003eOtzera ID: OTZ-2026-01764\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOtzera 50\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e29\/50 — Collectible\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance Index: 70%\u003c\/p\u003e\u003ch2\u003eCare\u003c\/h2\u003e\u003cp\u003eClean with lukewarm water, mild soap and a soft brush. Protect from hard knocks and sudden temperature changes.\u003c\/p\u003e\u003cp\u003ePhotographs show this individual gemstone. Color may vary with lighting and screen settings.\u003c\/p\u003e\u003ch2\u003eDigital Gem Passport\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/otzera.com\/pages\/passport\/otz-2026-01764\"\u003eView this gemstone’s Digital Gem Passport\u003c\/a\u003e for its permanent record and Otzera 50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51504031858935,"sku":"OTZ-2026-01764","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01764-1-4k.jpg?v=1793202595"},{"product_id":"1-29-ct-blue-sapphire-round-mixed-cut","title":"1.29 ct Blue Sapphire — Round Mixed Cut","description":"\u003ch2\u003eCollector’s Note\u003c\/h2\u003e\u003cp\u003eInky blue color gives this 1.29 ct natural Tanzanian sapphire a distinctive, understated elegance. The round mixed cut reveals flashes of blue as the stone moves, while its pleasingly clear appearance lets you explore the facets within. At approximately 6.2 mm across, it is an attractive choice for a classic setting or a collection of blue gemstones.\u003c\/p\u003e\u003ch2\u003eGemstone Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGemstone: Natural blue sapphire\u003c\/li\u003e\n\u003cli\u003eSpecies: Corundum\u003c\/li\u003e\n\u003cli\u003eWeight: 1.29 ct\u003c\/li\u003e\n\u003cli\u003eShape \/ Cut: Round Mixed Cut\u003c\/li\u003e\n\u003cli\u003eMeasurements: 6.1-6.2 x 4.2 mm\u003c\/li\u003e\n\u003cli\u003eOrigin: Tanzania\u003c\/li\u003e\n\u003cli\u003eTreatment: Heated\u003c\/li\u003e\n\u003cli\u003eOtzera ID: OTZ-2026-01770\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOtzera 50\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e27\/50 — Discovery\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance Index: 55%\u003c\/p\u003e\u003ch2\u003eCare\u003c\/h2\u003e\u003cp\u003eClean with lukewarm water, mild soap and a soft brush. Protect from hard knocks and sudden temperature changes.\u003c\/p\u003e\u003cp\u003ePhotographs show this individual gemstone. Color may vary with lighting and screen settings.\u003c\/p\u003e\u003ch2\u003eDigital Gem Passport\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/otzera.com\/pages\/passport\/otz-2026-01770\"\u003eView this gemstone’s Digital Gem Passport\u003c\/a\u003e for its permanent record and Otzera 50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51504040280311,"sku":"OTZ-2026-01770","price":565.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01770-1-4k.jpg?v=1793202595"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/collections\/1.27sapphirecambodia.png?v=1785395361","url":"https:\/\/otzera.com\/collections\/sapphire.oembed?page=2","provider":"Otzera","version":"1.0","type":"link"}