{"product_id":"london-blue-topaz-6-12ct-oval-cgl","title":"Natural London Blue Topaz 6.12 ct – Oval Cut, Eye Clean, ČGL Certified","description":"\u003cp data-start=\"106\" data-end=\"509\"\u003eThis \u003cstrong data-start=\"111\" data-end=\"132\"\u003eLondon Blue Topaz\u003c\/strong\u003e weighs \u003cstrong data-start=\"140\" data-end=\"155\"\u003e6.12 carats\u003c\/strong\u003e and is fashioned in an elegant \u003cstrong data-start=\"187\" data-end=\"199\"\u003eoval cut\u003c\/strong\u003e, measuring \u003cstrong data-start=\"211\" data-end=\"237\"\u003e13.40 × 9.65 × 6.00 mm\u003c\/strong\u003e. The gemstone displays a rich \u003cstrong data-start=\"268\" data-end=\"291\"\u003egreenish blue color\u003c\/strong\u003e, characteristic of the highly sought-after London Blue topaz variety. With excellent transparency and \u003cstrong data-start=\"394\" data-end=\"425\"\u003eclarity graded as eye clean\u003c\/strong\u003e, the stone presents a clean appearance with no inclusions visible to the naked eye.\u003c\/p\u003e\n\u003cp data-start=\"511\" data-end=\"924\"\u003eIts classic oval shape and precise faceting maximize brilliance and light return, creating vivid flashes of deep blue color throughout the gemstone. London Blue topaz is particularly admired for its sophisticated darker tone, offering greater depth and intensity than lighter blue topaz varieties. The combination of attractive proportions and vivid color makes this gemstone an excellent choice for fine jewelry.\u003c\/p\u003e\n\u003cp data-start=\"926\" data-end=\"1403\"\u003eCertified by the \u003cstrong data-start=\"943\" data-end=\"981\"\u003eCzech Gemological Laboratory (ČGL)\u003c\/strong\u003e, this gemstone has been identified as \u003cstrong data-start=\"1020\" data-end=\"1037\"\u003etreated topaz\u003c\/strong\u003e, with the laboratory confirming that the \u003cstrong data-start=\"1079\" data-end=\"1106\"\u003ecolor has been enhanced\u003c\/strong\u003e, a standard and widely accepted treatment used to achieve the desirable London Blue color. The combination of eye-clean clarity, elegant oval cut, vivid blue coloration, and independent laboratory certification makes this gemstone an excellent choice for collectors and bespoke jewelry creations.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"SOSNA Gems \u0026 Jewellery","offers":[{"title":"Default Title","offer_id":44546416017672,"sku":"GP00513","price":4095.0,"currency_code":"CZK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0648\/8398\/2600\/products\/natural-blue-topaz-612-ct-greenish-blue-oval-cut-1195507.jpg?v=1764732976","url":"https:\/\/sosnagems.com\/products\/london-blue-topaz-6-12ct-oval-cgl","provider":"SOSNA Gems","version":"1.0","type":"link"}