{"product_id":"natural-green-sapphire-1-66ct-radiant-cut-loose-gemstone","title":"Natural Green Sapphire 1.66 Ct Radiant Cut Loose Gemstone | Heat Treated September Birthstone","description":"\u003carticle\u003e\n\n\u003cp\u003e\u003cstrong\u003eNatural green sapphire weighing 1.66 carats, featuring a radiant cut, greenish yellow colour and heat-treated enhancement. Offered as a loose gemstone for custom rings, pendants and bespoke jewellery, with certification from an authorised gemologist.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis natural green sapphire weighs 1.66 carats and displays an attractive greenish yellow colour with excellent brilliance. Sold as a loose gemstone, it offers complete flexibility for creating a custom engagement ring, pendant or personalised jewellery design while showcasing the durability and timeless appeal of natural sapphire.\u003c\/p\u003e\n\n\u003cdiv class=\"ai-search-summary\" style=\"background:#f0f6ff;padding:16px;border-radius:8px;margin-bottom:20px;\"\u003e\n\n\u003ch3 style=\"margin-top:0;\"\u003eQuick Summary\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eNatural Green Sapphire\u003c\/li\u003e\n\u003cli\u003eWeight: 1.66 Carats\u003c\/li\u003e\n\u003cli\u003eRadiant Cut Loose Gemstone\u003c\/li\u003e\n\u003cli\u003eColour: Greenish Yellow\u003c\/li\u003e\n\u003cli\u003eClarity: VS\u003c\/li\u003e\n\u003cli\u003eTreatment: Heat Treated\u003c\/li\u003e\n\u003cli\u003eBirthstone: September\u003c\/li\u003e\n\u003cli\u003eGemologist Certificate Included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cp\u003eGreen sapphires belong to the natural corundum family and are valued for their distinctive colours, durability and suitability for fine jewellery. The radiant cut combines brilliance with clean geometric lines, making it an excellent choice for both contemporary and classic jewellery designs.\u003c\/p\u003e\n\n\u003cp\u003eRanking 9 on the Mohs hardness scale, sapphire is suitable for jewellery intended for regular wear when professionally set. As the September birthstone, sapphire has traditionally been associated with wisdom, sincerity and loyalty.\u003c\/p\u003e\n\n\u003ch2\u003eGemstone Specifications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentification:\u003c\/strong\u003e Natural Sapphire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecies:\u003c\/strong\u003e Natural Corundum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariety:\u003c\/strong\u003e Green Sapphire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape \u0026amp; Cut:\u003c\/strong\u003e Radiant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e VS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.66 Carats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Greenish Yellow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 5.20 × 7.40 × 4.10 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e Heat Treated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBirthstone:\u003c\/strong\u003e September\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCertification \u0026amp; Authenticity\u003c\/h2\u003e\n\n\u003cp\u003eThis sapphire includes a certificate issued by an authorised gemologist confirming its natural identity and disclosed treatment information.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSeller Notes:\u003c\/strong\u003e A natural crystal inclusion is visible under magnification. Such internal characteristics are typical of natural earth-mined sapphires and are consistent with natural gemstone formation.\u003c\/p\u003e\n\n\u003ch2\u003eJewellery Applications\u003c\/h2\u003e\n\n\u003cp\u003eThis listing is for a loose gemstone only and does not include a finished jewellery setting.\u003c\/p\u003e\n\n\u003cp\u003eSuitable applications include:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eCustom engagement rings\u003c\/li\u003e\n\u003cli\u003eSolitaire ring designs\u003c\/li\u003e\n\u003cli\u003eHalo ring settings\u003c\/li\u003e\n\u003cli\u003ePendants and necklaces\u003c\/li\u003e\n\u003cli\u003eCustom fine jewellery\u003c\/li\u003e\n\u003cli\u003eSeptember birthstone jewellery\u003c\/li\u003e\n\u003cli\u003eGemstone collections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCustom jewellery services are available in yellow gold, white gold, rose gold, silver and platinum. Contact us to discuss your preferred design.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Gemstone?\u003c\/h2\u003e\n\n\u003cp\u003eNatural green sapphires are appreciated for their distinctive colour range, durability and versatility in jewellery design. Every gemstone displays unique natural characteristics, making each sapphire an individual choice for bespoke jewellery and gemstone collections.\u003c\/p\u003e\n\n\u003ch2\u003eExplore Related Collections\u003c\/h2\u003e\n\n\u003cp\u003eBrowse related collections and educational resources:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.nashgems.com\/collections\/blue-green-teal-sapphire\"\u003eGreen, Teal \u0026amp; Blue Sapphire Collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.nashgems.com\/collections\"\u003eNatural Sapphire Collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.nashgems.com\/collections\/all\"\u003eAll Loose Sapphire Gemstones\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.nashgems.com\/collections\/sapphire-gemstone-jewelry-rings\"\u003eCustom \u0026amp; Ready-to-Wear Jewellery\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.nashgems.com\/blogs\/gemstone-articles\"\u003eGemstone Education Articles\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.nashgems.com\/pages\/contact\"\u003eContact Us\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\n\u003cp\u003eWorldwide shipping is available. Buyers are responsible for applicable customs duties or import taxes. Returns are accepted according to our published return policy, provided the gemstone is returned unused and in its original condition.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eIs this a natural green sapphire?\u003c\/h3\u003e\n\n\u003cp\u003eYes. This gemstone is identified as a natural sapphire and displays a greenish yellow colour.\u003c\/p\u003e\n\n\u003ch3\u003eHas this sapphire been treated?\u003c\/h3\u003e\n\n\u003cp\u003eYes. This sapphire has undergone heat treatment, which is disclosed in the specifications and gemologist certificate.\u003c\/p\u003e\n\n\u003ch3\u003eDoes this gemstone include certification?\u003c\/h3\u003e\n\n\u003cp\u003eYes. A certificate from an authorised gemologist is included.\u003c\/p\u003e\n\n\u003ch3\u003eIs this sold as a finished ring?\u003c\/h3\u003e\n\n\u003cp\u003eNo. This listing is for a loose gemstone only. Custom jewellery settings are available separately.\u003c\/p\u003e\n\n\u003ch3\u003eCan this gemstone be used for an engagement ring?\u003c\/h3\u003e\n\n\u003cp\u003eYes. Its radiant cut and durability make it well suited for custom engagement ring designs and other fine jewellery applications.\u003c\/p\u003e\n\n\u003c\/article\u003e\n","brand":"NASHGEMS","offers":[{"title":"Default Title","offer_id":44641294778596,"sku":"1.66 tl rdnt1 rm lt7 16","price":1039.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/9569\/9940\/files\/green_sapphire_loose_gemstone_mf43.jpg?v=1745833897","url":"https:\/\/www.nashgems.com\/products\/natural-green-sapphire-1-66ct-radiant-cut-loose-gemstone","provider":"NASHGEMS","version":"1.0","type":"link"}