{"product_id":"andesine-tibet-5","title":"Andesine - Tibet","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eA richly colored Andesine with beautiful coral-red and raspberry tones, from material marketed as Tibetan Andesine. These gemstones became the center of a major gemological controversy in the mid-2000s, when investigations revealed that much of the red Andesine entering the market had been artificially colored through copper diffusion. What was once sold as a rare natural gemstone has since become an interesting chapter in modern gemological history.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWe believe this stone may be diffusion-treated, although its treatment status has not been independently verified. An attractive gemstone with an unusual story and particular interest for collectors of gemological curiosities\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e1.420 cts \/ 7.8 x 6.1 x 4.1 mm \u003c\/p\u003e\n\u003cp\u003eEstimate: $75 - $85\u003c\/p\u003e","brand":"Gem Dragon Auctions","offers":[{"title":"Default Title","offer_id":52107866276153,"sku":"16561x","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/0037\/0233\/files\/UN-6976_iiovmx86smm_2026-10-10-08-28-38.jpg?v=1791715128","url":"https:\/\/gemdragonauctions.com\/products\/andesine-tibet-5","provider":"Gem Dragon Auctions ","version":"1.0","type":"link"}