{"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","url":"https:\/\/otzera.com\/products\/1-29-ct-blue-sapphire-round-mixed-cut","provider":"Otzera","version":"1.0","type":"link"}