{"product_id":"blue-green-otz-2026-01646","title":"2.98 ct Namibian Blue-Green Tourmaline","description":"\u003cp\u003eCollector's Note\u003cbr\u003e\nA nearly three-carat natural tourmaline with a saturated blue-green appearance and an unusual buff-top cutting style. Its oval outline carries broad flashes of green and teal as the stone moves, while the 2.98 ct size gives it strong visual presence.\u003c\/p\u003e\n\n\u003cp\u003eGemstone Details\u003cbr\u003e\nGemstone: Natural Blue-Green Tourmaline\u003cbr\u003e\nSpecies: Natural Tourmaline\u003cbr\u003e\nWeight: 2.98 ct\u003cbr\u003e\nShape \/ Cut: Oval Buff Top Modified Brilliant Cut\u003cbr\u003e\nMeasurements: 10.00 x 8.47 x 5.87 mm\u003cbr\u003e\nOrigin: Namibia\u003cbr\u003e\nTreatment: Not documented\u003c\/p\u003e\n\n\u003cp\u003eO50 Collector Evaluation\u003cbr\u003e\nOtzera 50: 33\/50 — Collectible\u003cbr\u003e\nFace-Up Performance: 75%\u003c\/p\u003e\n\n\u003cp\u003eTreatment \u0026amp; Origin Disclosure\u003cbr\u003e\nThe current Otzera record lists Namibia as the geographic origin. No treatment or independent laboratory report is documented in the current record.\u003c\/p\u003e\n\n\u003cp\u003eCare \u0026amp; Setting\u003cbr\u003e\nTourmaline is suitable for jewelry wear with sensible care. Clean with warm water, mild soap and a soft brush; avoid sudden temperature changes and aggressive cleaning methods.\u003c\/p\u003e\n\n\u003cp\u003eDigital Gem Passport\u003cbr\u003e\nAccompanied by an Otzera Digital Gem Passport preserving its identifying details, origin and treatment disclosures, and O50 evaluation.\u003c\/p\u003e","brand":"Otzera","offers":[{"title":"Default Title","offer_id":51150481719543,"sku":"OTZ-2026-01646","price":1290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9999\/6919\/files\/OTZ-2026-01646-blue-green-tourmaline-1.jpg?v=1789159236","url":"https:\/\/otzera.com\/products\/blue-green-otz-2026-01646","provider":"Otzera","version":"1.0","type":"link"}