{"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","url":"https:\/\/otzera.com\/products\/1-31-ct-blue-sapphire-oval-mixed-cut","provider":"Otzera","version":"1.0","type":"link"}