{"product_id":"natural-blue-green-yellow-bi-color-sapphire-0-57ct-emerald-cut-loose-gemstone","title":"Natural Blue Green Yellow Bi-Color Sapphire 0.57 Ct Emerald Cut Loose Gemstone | Unheated September Birthstone","description":"\u003carticle\u003e\n\n\u003cp\u003e\u003cstrong\u003eNatural blue green yellow bi-color sapphire weighing 0.57 carats, featuring an emerald cut, VVS clarity and untreated (no heat) status. Offered as a loose gemstone for custom engagement rings, pendants and bespoke jewellery designs, complete with certification from an authorised gemmologist.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis natural bi-color sapphire displays a distinctive blend of blue, green and yellow within a single gemstone, creating a unique colour combination admired by collectors and jewellery enthusiasts. Sold as a loose gemstone, it provides complete flexibility for creating a custom engagement ring, pendant or personalised jewellery design.\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 blue green yellow bi-color sapphire\u003c\/li\u003e\n\u003cli\u003eWeight: 0.57 carats\u003c\/li\u003e\n\u003cli\u003eEmerald cut loose gemstone\u003c\/li\u003e\n\u003cli\u003eClarity: VVS\u003c\/li\u003e\n\u003cli\u003eColour: Blue Green Yellow\u003c\/li\u003e\n\u003cli\u003eTreatment: Untreated (No Heat)\u003c\/li\u003e\n\u003cli\u003eBirthstone: September\u003c\/li\u003e\n\u003cli\u003eAuthorised gemmologist certificate included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cp\u003eThe emerald cut enhances the gemstone's natural colour zoning with elegant step-cut reflections and clean symmetry. Sapphire belongs to the corundum family and ranks 9 on the Mohs hardness scale, making it suitable for jewellery intended for regular wear when professionally set.\u003c\/p\u003e\n\n\u003cp\u003eAs the September birthstone, sapphire has traditionally been associated with wisdom, loyalty and sincerity. Bi-color sapphires are appreciated for their naturally occurring colour combinations, making every gemstone visually distinctive.\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 Blue Green Yellow Bi-Color Sapphire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape \u0026amp; Cut:\u003c\/strong\u003e Emerald Cut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e VVS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.57 Carat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Blue Green Yellow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 4.30 × 4.70 × 2.70 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e Untreated (No Heat)\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 gemmologist confirming its natural origin and gemstone characteristics.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSeller Notes:\u003c\/strong\u003e A clean gemstone. Natural internal characteristics may be visible under magnification and are consistent with earth-mined sapphires.\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 for:\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\u003eBespoke 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 with optional diamond accents.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Gemstone?\u003c\/h2\u003e\n\n\u003cp\u003eNatural bi-color sapphires display multiple colours within a single crystal, making each gemstone unique. Their durability, natural beauty and distinctive appearance make them a popular choice for custom jewellery and collectors seeking something different from a traditional single-colour sapphire.\u003c\/p\u003e\n\n\u003ch2\u003eExplore Related Collections\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/blue-green-teal-sapphire\"\u003eBlue Green \u0026amp; Teal Sapphire Collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/\"\u003eAll Loose Sapphire Gemstones\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/gemstone-articles\"\u003eGemstone Education Articles\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/sapphire-gemstone-jewelry-rings\"\u003eCustom \u0026amp; Ready-to-Wear Sapphire Jewellery\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 with tracking and insurance included. Buyers are responsible for any applicable customs duties or import taxes.\u003c\/p\u003e\n\n\u003cp\u003eReturns are accepted within 15 days of delivery provided the gemstone is returned unused and in its original condition, in accordance with our published return policy.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eIs this a natural bi-color sapphire?\u003c\/h3\u003e\n\n\u003cp\u003eYes. This gemstone is a natural earth-mined blue green yellow bi-color sapphire and is not synthetic or laboratory created.\u003c\/p\u003e\n\n\u003ch3\u003eHas this sapphire received heat treatment?\u003c\/h3\u003e\n\n\u003cp\u003eNo. This gemstone is untreated (no heat), as disclosed in the specifications and gemmologist certificate.\u003c\/p\u003e\n\n\u003ch3\u003eIs this supplied 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 durability and emerald cut make it suitable for custom engagement ring designs when professionally set.\u003c\/p\u003e\n\n\u003ch3\u003eWill the gemstone appear different under various lighting conditions?\u003c\/h3\u003e\n\n\u003cp\u003eYes. Natural bi-color sapphires may display subtle colour variation under daylight, indoor lighting and studio lighting due to their natural colour zoning.\u003c\/p\u003e\n\n\u003c\/article\u003e\n","brand":"NASHGEMS","offers":[{"title":"Default Title","offer_id":44161589444836,"sku":"0.57 teal R47","price":210.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/9569\/9940\/files\/IMG_4523.jpg?v=1745833288","url":"https:\/\/www.nashgems.com\/products\/natural-blue-green-yellow-bi-color-sapphire-0-57ct-emerald-cut-loose-gemstone","provider":"NASHGEMS","version":"1.0","type":"link"}