{"product_id":"11-31ct-etw-earth-mined-greenish-blue-grandidierite-oval-cut-rare-gemstone","title":"11.31ct ETW Earth-Mined Greenish Blue Grandidierite – Oval Cut, Rare Gemstone","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e11.31ct ETW Earth-Mined Greenish Blue Grandidierite – Oval Cut, Rare Gemstone\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis impressive 11.31-carat earth-mined grandidierite from Madagascar features distinctive greenish blue coloration and an elegant oval cut. Its substantial size and rare mineral identity make it an appealing choice for gemstone collectors and custom jewelry designs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSpecifications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGemstone:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Greenish Blue Grandidierite\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCarat Weight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 11.31ct ETW\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCut:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Oval Cut\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 17.2 x 13.7 x 7.0 mm\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eClarity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Opaque\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eTreatment:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Unheated\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eOrigin:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Madagascar, Africa\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCondition:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e New\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eEarth-mined Madagascar grandidierite weighing 11.31ct ETW in an oval cut, featuring opaque clarity, unheated character, and distinctive greenish blue coloration.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eGrandidierite is a rare magnesium aluminum borosilicate mineral prized for its attractive blue-green hues and limited geographic occurrence. Its distinctive coloration ranges from greenish blue to deeper teal, making it particularly interesting to mineral enthusiasts and gemstone collectors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMadagascar is the best-known source of gem-quality grandidierite, producing specimens with varying degrees of transparency and color saturation. The mineral was first discovered in southern Madagascar and remains a sought-after collector gemstone.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis specimen is unheated and untreated, retaining its naturally occurring coloration without artificial enhancement. Its opaque clarity gives it a solid appearance, emphasizing its color and polished form rather than transparent brilliance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt 11.31 carats and measuring 17.2 x 13.7 x 7.0 mm, this gemstone offers impressive visual presence. Its classic oval shape makes it suitable for a custom statement pendant or a distinctive collector's display.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eGrandidierite has a Mohs hardness of approximately 7 to 7.5, offering reasonable durability with appropriate care. A protective setting and careful handling are recommended.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis individual Madagascan grandidierite combines impressive size, unusual greenish blue coloration, and the rarity of a naturally occurring collector gemstone.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e(Stock Code: ABMM)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eKeywords: loose gemstone, earth-mined grandidierite, natural grandidierite, Madagascar grandidierite, Madagascar gemstone, greenish blue gemstone, teal gemstone, oval cut grandidierite, opaque gemstone, unheated grandidierite, untreated gemstone, 11.31ct grandidierite, rare gemstone, collector gemstone, statement pendant gemstone\u003c\/span\u003e\u003c\/p\u003e","brand":"West Coast Gemstones","offers":[{"title":"Default Title","offer_id":68606451187993,"sku":null,"price":395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/9196\/9305\/files\/11.31ctETWEarth-MinedGreenishBlueGrandidierite_OvalCut_RareGemstone.webp?v=1794329269","url":"https:\/\/westcoastgemstones.com\/products\/11-31ct-etw-earth-mined-greenish-blue-grandidierite-oval-cut-rare-gemstone","provider":"West Coast","version":"1.0","type":"link"}