{"product_id":"natural-australian-parti-sapphire-1-10ct-cushion-cut-loose-gemstone","title":"Natural Australian Parti Sapphire 1.10 Ct Cushion Cut Loose Gemstone | No Heat September Birthstone","description":"\u003carticle\u003e\n\n\u003cp\u003e\u003cstrong\u003eNatural Australian parti sapphire weighing 1.10 carats, featuring a cushion cut, green-yellow parti colour, SI 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 Australian parti sapphire displays a distinctive combination of green and yellow within a single crystal, creating the unique multicolour appearance that parti sapphires are known for. Sold as a loose gemstone, it offers complete flexibility for creating a custom engagement ring, pendant or personalised fine jewellery piece.\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 Australian parti sapphire\u003c\/li\u003e\n\u003cli\u003eWeight: 1.10 carats\u003c\/li\u003e\n\u003cli\u003eCushion cut loose gemstone\u003c\/li\u003e\n\u003cli\u003eClarity: SI\u003c\/li\u003e\n\u003cli\u003eColour: Green Yellow Parti\u003c\/li\u003e\n\u003cli\u003eTreatment: No Heat \/ Untreated\u003c\/li\u003e\n\u003cli\u003eBirthstone: September\u003c\/li\u003e\n\u003cli\u003eGemmologist certificate included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cp\u003eThe cushion cut enhances brilliance while showcasing the gemstone's natural colour zoning and soft outline. 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 birthstone for September, sapphire has traditionally been associated with wisdom, loyalty and sincerity. Australian parti sapphires are appreciated for their naturally occurring blend of colours, giving every gemstone its own distinctive appearance.\u003c\/p\u003e\n\n\u003ch2\u003eGemstone Specifications\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eIdentification:\u003c\/strong\u003e Natural Sapphire\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eSpecies:\u003c\/strong\u003e Natural Corundum\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eVariety:\u003c\/strong\u003e Australian Parti Sapphire\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eShape \u0026amp; Cut:\u003c\/strong\u003e Cushion Cut\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e SI\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.10 Carats\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Parti Green Yellow\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 5.00 × 5.20 × 4.40 mm\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e No Heat (Untreated)\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eBirthstone:\u003c\/strong\u003e September\u003c\/li\u003e\n\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 disclosed gemstone characteristics.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSeller Notes:\u003c\/strong\u003e Natural crystal inclusions, feather inclusions and colour banding are present. These characteristics are commonly found in 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 for:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eCustom engagement rings\u003c\/li\u003e\n\n\u003cli\u003eCushion cut solitaire rings\u003c\/li\u003e\n\n\u003cli\u003eHalo ring designs\u003c\/li\u003e\n\n\u003cli\u003ePendants and necklaces\u003c\/li\u003e\n\n\u003cli\u003eFine bespoke jewellery\u003c\/li\u003e\n\n\u003cli\u003eSeptember birthstone jewellery\u003c\/li\u003e\n\n\u003cli\u003eGemstone collections\u003c\/li\u003e\n\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\u003eAustralian parti sapphires are recognised for their naturally occurring combination of multiple colours within a single gemstone. Each stone displays its own unique colour distribution, making every sapphire visually distinctive. Their durability, individuality and versatility make them an excellent choice for custom jewellery and gemstone collectors seeking an alternative to traditional single-colour sapphires.\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\n\u003cli\u003e\u003ca href=\"\/collections\/blue-green-teal-sapphire\"\u003eParti, Teal \u0026amp; Blue Green Sapphire Collection\u003c\/a\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"\/collections\/\"\u003eAll Loose Sapphire Gemstones\u003c\/a\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"\/blogs\/gemstone-articles\"\u003eGemstone Education Articles\u003c\/a\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"\/collections\/sapphire-gemstone-jewelry-rings\"\u003eCustom \u0026amp; Ready-to-Wear Sapphire Jewellery\u003c\/a\u003e\u003c\/li\u003e\n\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. Delivery times may vary depending on destination. 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 Australian parti sapphire?\u003c\/h3\u003e\n\n\u003cp\u003eYes. This gemstone is a natural earth-mined Australian parti 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\u003eIs a cushion cut parti sapphire suitable for an engagement ring?\u003c\/h3\u003e\n\n\u003cp\u003eYes. The cushion cut offers an attractive balance of brilliance and soft edges while highlighting the gemstone's natural colour zoning, making it well suited for custom engagement ring designs.\u003c\/p\u003e\n\n\u003ch3\u003eWill the gemstone appear different under different lighting?\u003c\/h3\u003e\n\n\u003cp\u003eYes. Natural parti 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":48742788694244,"sku":"1.10 crt tl R57","price":420.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/9569\/9940\/files\/partisapphireloosestonecushioncut1.10crt-2.jpg?v=1776356268","url":"https:\/\/www.nashgems.com\/products\/natural-australian-parti-sapphire-1-10ct-cushion-cut-loose-gemstone","provider":"NASHGEMS","version":"1.0","type":"link"}