{"product_id":"3-53-ct-blue-spinel-oval-mixed-cut","title":"3.53 ct Blue Spinel — Oval Mixed Cut","description":"\u003ch2\u003eCollector’s Note\u003c\/h2\u003e\u003cp\u003eCool steel-blue color and an elongated oval shape give this natural spinel a distinctive elegance. Broad facets catch silvery reflections and flashes of blue as the viewing angle changes. At 3.53 ct and 12.5 mm long, it has a generous presence that would suit a statement pendant, a bespoke ring or a collection exploring the many shades of blue.\u003c\/p\u003e\u003ch2\u003eGemstone Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGemstone: Natural blue spinel\u003c\/li\u003e\n\u003cli\u003eSpecies: Spinel\u003c\/li\u003e\n\u003cli\u003eWeight: 3.53 ct\u003c\/li\u003e\n\u003cli\u003eShape \/ Cut: Oval Mixed Cut\u003c\/li\u003e\n\u003cli\u003eMeasurements: 12.5 x 7.7 x 4.4 mm\u003c\/li\u003e\n\u003cli\u003eTreatment: None\u003c\/li\u003e\n\u003cli\u003eOtzera ID: OTZ-2026-01765\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOtzera 50\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e28\/50 — Collectible\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance Index: 55%\u003c\/p\u003e\u003ch2\u003eTreatment\u003c\/h2\u003e\u003cp\u003eSpinel is rarely treated, and much of its appeal to collectors is that its color is natural.\u003c\/p\u003e\u003ch2\u003eCare\u003c\/h2\u003e\u003cp\u003eClean gently 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-2026-01765\"\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":51505266032887,"sku":"OTZ-2026-01765","price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01765-1-4k.jpg?v=1793202595","url":"https:\/\/otzera.com\/products\/3-53-ct-blue-spinel-oval-mixed-cut","provider":"Otzera","version":"1.0","type":"link"}