{"product_id":"untreated-tanzanite-ring-11-40-carats","title":"Untreated Tanzanite Ring, 11.40 carats","description":"This exceptional ring features a rare 11.40-carat emerald-cut tanzanite that remains in its natural, untreated state. While most tanzanites undergo heat treatment to transform their brownish-purple hue into a vibrant violet color, this specimen displays its magnificent purple-blue coloration completely naturally—a characteristic of exceptional rarity in the tanzanite market. Its AGL report confirms this tanzanite's natural status, Tanzanian origin, and excellent color stability with no clarity enhancements. This stunning gemstone is elegantly complemented by two kite shaped diamonds totaling 0.51 carats, featuring G-H color and VS1 clarity, all masterfully set in platinum. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Cert_32-0499.pdf\" target=\"_blank\"\u003eDownload the Report\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":51800306778434,"sku":null,"price":21850.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/5376\/6978\/files\/32-0499_1.png?v=1768064502","url":"https:\/\/www.bullvendors19.com\/es\/products\/untreated-tanzanite-ring-11-40-carats","provider":"Bull Vendors 19","version":"1.0","type":"link"}