{"product_id":"3-90-ct-fire-opal-oval-modified-brilliant-cut","title":"3.90 ct Fire Opal — Oval Modified Brilliant Cut","description":"\u003ch2\u003eCollector’s Note\u003c\/h2\u003e\u003cp\u003eWarm orange color gives this 3.90 ct natural Mexican fire opal an immediate presence. Its oval modified brilliant cut brings flashes of light across the face, while a faint play-of-color appears in direct sunlight — a subtle extra detail to discover as you turn the stone. With a generous 13.06 mm length, it is an inviting choice for an opal collection or a distinctive pendant.\u003c\/p\u003e\u003ch2\u003eGemstone Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGemstone: Natural fire opal\u003c\/li\u003e\n\u003cli\u003eSpecies: Opal\u003c\/li\u003e\n\u003cli\u003eWeight: 3.90 ct\u003c\/li\u003e\n\u003cli\u003eShape \/ Cut: Oval Modified Brilliant\u003c\/li\u003e\n\u003cli\u003eMeasurements: 13.06 x 10.90 x 6.67 mm\u003c\/li\u003e\n\u003cli\u003eOrigin: Mexico\u003c\/li\u003e\n\u003cli\u003eTreatment: None\u003c\/li\u003e\n\u003cli\u003eOtzera ID: OTZ-2026-01760\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOtzera 50\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e37\/50 — Distinguished\u003c\/strong\u003e\u003cbr\u003eFace-Up Performance Index: 85%\u003c\/p\u003e\u003ch2\u003eTreatment\u003c\/h2\u003e\u003cp\u003eMexican fire opal is not treated; its glowing body color is natural.\u003c\/p\u003e\u003ch2\u003eCare\u003c\/h2\u003e\u003cp\u003eClean gently with a soft cloth and lukewarm water. Protect from hard knocks, high heat and sudden temperature changes; avoid steam and ultrasonic cleaning.\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-2026-01760\"\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","offer_id":51502622900471,"sku":"OTZ-2026-01760","price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/3.9_fire_opal_11.png?v=1793198735","url":"https:\/\/otzera.com\/products\/3-90-ct-fire-opal-oval-modified-brilliant-cut","provider":"Otzera","version":"1.0","type":"link"}