{"title":"Quartz","description":"\u003cp\u003eOur current selection of quartz — citrine, amethyst, rose quartz and included rock crystal, one of the most varied gem families in nature.\u003c\/p\u003e\u003cp\u003eEach stone is selected individually and disclosed in full, and rated stones carry an \u003ca href=\"\/pages\/otzera-50\"\u003eOtzera 50\u003c\/a\u003e score judged against their own species.\u003c\/p\u003e","products":[{"product_id":"citrine-otz-2026-01631","title":"7.81 ctw Custom-Cut Citrine Pair","description":"\u003cp\u003eGolden yellow color and dramatic custom cutting define this 7.81 ctw matched pair of citrines. The two stones weigh 4.01 and 3.80 ct and are closely matched in size and outline. Each has a sculptural modified hexagonal form with pointed, snowflake-like edges and a lively faceting pattern that creates strong movement and brightness.\u003c\/p\u003e\n\n\u003cp\u003eThe pair is clean to the unaided eye, with only subtle color-zoning lines visible from the pavilion. What makes these stones especially collectible is the cutting: this is not a standard commercial shape, but a distinctive custom design executed with a high level of symmetry and craftsmanship.\u003c\/p\u003e\n\n\u003cp\u003eOtzera 50: 38\/50 — Distinguished\u003cbr\u003e\nTotal weight: 7.81 ctw (4.01 ct + 3.80 ct)\u003cbr\u003e\nApprox. dimensions per stone: 12.1 × 10.5 × 6.4 mm\u003cbr\u003e\nTreatment: Heated (standard for citrine)\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTreatment\u003c\/strong\u003e\u003cbr\u003eMost citrine is quartz gently warmed to a golden color, a permanent and long-accepted practice.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51040489636087,"sku":"OTZ-2026-01631","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01631-d.jpg?v=1787067019"},{"product_id":"amethyst-otz-2026-01633","title":"9.42 ctw Custom-Cut Amethyst Pair","description":"\u003cp\u003eRich purple color and an unusual architectural cut give this 9.42 ctw matched pair of amethysts a distinctive character. The stones weigh 4.73 and 4.69 ct and are closely matched in size, making the pair well suited for a coordinated jewelry design or gemstone collection.\u003c\/p\u003e\n\n\u003cp\u003eTheir custom shape combines a high, cabochon-like dome with numerous square and step-style facets, creating a checkerboard effect that looks very different from a conventional amethyst cut. The result is playful, sculptural and highly individual.\u003c\/p\u003e\n\n\u003cp\u003eOne stone has a couple of moderate chips on the bottom. These are disclosed here and reflected in the Otzera evaluation rather than hidden from view.\u003c\/p\u003e\n\n\u003cp\u003eOtzera 50: 34\/50 — Collectible\u003cbr\u003e\nFace-Up Performance: 85%\u003cbr\u003e\nTotal weight: 9.42 ctw (4.73 ct + 4.69 ct)\u003cbr\u003e\nApprox. dimensions: 11.6–11.8 × 7.8 × 7.0–7.1 mm\u003cbr\u003e\nTreatment: None\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTreatment\u003c\/strong\u003e\u003cbr\u003eAmethyst is rarely treated; the purple of this pair is natural.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51040489996535,"sku":"OTZ-2026-01633","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01633-a.jpg?v=1787066744"},{"product_id":"matched-pair-of-tourmalinated-quartz-obelisks","title":"Matched Pair of Tourmalinated Quartz Obelisks","description":"\u003ch3\u003eCollector's Note\u003c\/h3\u003e\u003cp\u003eA striking matched pair of tourmalinated rock crystal obelisks, each filled with dense, fine needle-like tourmaline inclusions. The two pieces mirror one another beautifully in shape and internal patterning, giving the pair a graphic, almost painterly character that makes them especially appealing as a collector display or an unconventional jewelry design element.\u003c\/p\u003e\u003ch3\u003eGemstone Details\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eGemstone:\u003c\/strong\u003e Tourmalinated Quartz Pair\u003cbr\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Quartz\u003cbr\u003e\u003cstrong\u003eVariety:\u003c\/strong\u003e Tourmalinated Rock Crystal\u003cbr\u003e\u003cstrong\u003eForm \/ Cut:\u003c\/strong\u003e Polished Obelisk Pair\u003cbr\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e Approximately 31.5 × 10.97 × 6.13 mm\u003cbr\u003e\u003cstrong\u003eBody Color:\u003c\/strong\u003e Colorless\u003cbr\u003e\u003cstrong\u003eInclusions:\u003c\/strong\u003e Fine tubular tourmaline visible throughout\u003cbr\u003e\u003cstrong\u003eTreatment:\u003c\/strong\u003e None\u003c\/p\u003e\u003ch3\u003eCollector Significance\u003c\/h3\u003e\u003cp\u003eThe appeal of tourmalinated quartz lies in the natural contrast between transparent rock crystal and its included tourmaline needles. As a closely matched pair, these pieces offer additional design and display versatility.\u003c\/p\u003e\u003ch3\u003eCare \u0026amp; Setting\u003c\/h3\u003e\u003cp\u003eQuartz is suitable for jewelry and display with normal care. Clean with warm water, mild soap and a soft brush; avoid sharp impacts and harsh chemicals.\u003c\/p\u003e\u003ch3\u003eDigital Gem Passport\u003c\/h3\u003e\u003cp\u003eAccompanied by an Otzera Digital Gem Passport preserving the pair's identifying details and treatment disclosure.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51188069368055,"sku":"OTZ-2026-00327","price":950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-00327-tourmalated-quartz-pair-2.jpg?v=1789851416"},{"product_id":"9-03-ct-fantasy-cut-rose-quartz","title":"9.03 ct Fantasy-Cut Rose Quartz","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA sculptural rose quartz with a distinctive fantasy cut that turns a familiar gem material into something far more individual. The pale blush-pink body color is paired with sweeping carved and faceted surfaces that create a lively, asymmetrical play of light across the stone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Rose Quartz\u003cbr\u003eSpecies: Quartz\u003cbr\u003eWeight: 9.03 ct\u003cbr\u003eShape \/ Cut: Fantasy Cut\u003cbr\u003eMeasurements: 15.57 × 12.54 × 10.29 mm\u003cbr\u003eColor: Pale Pink\u003cbr\u003eTreatment: None\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment\u003c\/strong\u003e\u003cbr\u003eRose quartz is not treated. Like many pale pink gems, its color can soften after years of strong sunlight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eClean with warm water, mild soap and a soft brush. Avoid sharp impacts and prolonged exposure to intense heat or strong sunlight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving the stone's identifying details and permanent Otzera record.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51218239226103,"sku":"OTZ-2026-00332","price":195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-00332-rose-quartz-1.jpg?v=1790376920"},{"product_id":"8-33-ctw-vintage-citrine-pair-shield-step-cuts","title":"8.33 ctw Vintage Citrine Pair — Shield Step Cuts","description":"\u003cp\u003e\u003cstrong\u003eCollector's Note\u003c\/strong\u003e\u003cbr\u003eA fun and unusually shaped matched pair of vintage citrines totaling 8.33 carats. Their rounded shield outlines and step-cut faceting give them a distinctive architectural look that is rarely encountered as a matched pair. They would be particularly appealing for statement earrings or as substantial matched side stones in a three-stone design.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGemstone Details\u003c\/strong\u003e\u003cbr\u003eGemstone: Citrine Pair\u003cbr\u003eSpecies: Quartz\u003cbr\u003eTotal Weight: 8.33 ctw\u003cbr\u003ePieces: 2\u003cbr\u003eShape \/ Cut: Shield Step Cut\u003cbr\u003eRecorded Dimensions: 10.40 × 10.45 × 6.90 mm\u003cbr\u003eColor: Golden Yellow\u003cbr\u003eTreatment: Heated (standard for citrine)\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: 68%\u003cbr\u003eThe matched vintage shield-step form is the defining collector attribute of this pair.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreatment\u003c\/strong\u003e\u003cbr\u003eMost citrine is quartz gently warmed to a golden color, a permanent and long-accepted practice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCare \u0026amp; Setting\u003c\/strong\u003e\u003cbr\u003eClean with warm water, mild soap and a soft brush. Avoid sharp impacts and prolonged exposure to intense heat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Gem Passport\u003c\/strong\u003e\u003cbr\u003eAccompanied by an Otzera Digital Gem Passport preserving the pair's identifying details and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51218379309303,"sku":"OTZ-2026-01700","price":595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01700-citrine-pair-1.png?v=1790377384"}],"url":"https:\/\/otzera.com\/collections\/quartz.oembed","provider":"Otzera","version":"1.0","type":"link"}