{"product_id":"12-51ct-etw-earth-mined-yellow-purple-ametrine-marquise-rose-cut-unheated","title":"12.51ct ETW Earth-Mined Yellow \u0026 Purple Ametrine – Marquise Rose Cut, Unheated","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e12.51ct ETW Earth-Mined Yellow \u0026amp; Purple Ametrine – Marquise Rose Cut, Unheated\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis impressive 12.51-carat earth-mined ametrine from Bolivia features a beautiful combination of yellow and purple coloration in an elegant marquise rose cut. Its substantial size, distinctive two-tone appearance, and natural unheated character make it an appealing choice for statement jewelry or gemstone collecting.\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 Yellow \u0026amp; Purple Ametrine\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCarat Weight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 12.51ct ETW\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCut:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Marquise Rose Cut\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 22.5 x 11.8 x 10.0 mm\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eClarity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Slightly Included\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 Bolivia\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 Bolivian ametrine weighing 12.51ct ETW in a marquise rose cut, featuring slightly included clarity and unheated character.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis distinctive ametrine combines golden yellow and purple hues within a single gemstone. Its elongated marquise shape and rose-cut faceting create an elegant appearance while highlighting the contrast between its two natural colors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAmetrine is a naturally occurring variety of quartz combining the purple coloration of amethyst with the golden yellow tones of citrine. Its distinctive color zoning develops through differences in oxidation states of iron within the crystal structure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBolivia is particularly renowned for producing natural ametrine, especially from deposits associated with the Anahí mine. The gemstone's unusual two-tone appearance makes it highly appealing to collectors and jewelry designers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis specimen is unheated, retaining its naturally occurring yellow and purple coloration without heat enhancement. Its slightly included clarity reflects natural internal characteristics.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt 12.51 carats and measuring 22.5 x 11.8 x 10.0 mm, this ametrine offers impressive visual presence. Its elongated marquise shape makes it particularly suitable for a custom statement pendant or distinctive jewelry centerpiece.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAmetrine has a Mohs hardness of 7, providing reasonable resistance to scratching with appropriate care. Protective settings are recommended to safeguard its pointed ends and polished surfaces.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis individual Bolivian ametrine combines substantial size, attractive two-tone coloration, and elegant marquise rose-cut styling in a distinctive loose 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 ametrine, yellow purple ametrine, Bolivian ametrine, Bolivia gemstone, marquise rose cut ametrine, natural ametrine, unheated ametrine, slightly included ametrine, 12.51ct ametrine, large ametrine gemstone, bicolor quartz, two tone gemstone, statement pendant gemstone, collector gemstone\u003c\/span\u003e\u003c\/p\u003e","brand":"West Coast Gemstones","offers":[{"title":"Default Title","offer_id":68611136356633,"sku":null,"price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/9196\/9305\/files\/12.51ctETWEarth-MinedYellow_PurpleAmetrine_MarquiseRoseCut_Unheated.webp?v=1794349693","url":"https:\/\/westcoastgemstones.com\/products\/12-51ct-etw-earth-mined-yellow-purple-ametrine-marquise-rose-cut-unheated","provider":"West Coast","version":"1.0","type":"link"}