{"product_id":"antique-art-deco-18ct-rose-gold-french-natural-colour-change-sapphire-and-diamond-cluster-ring","title":"Antique, Art Deco, 18ct rose gold, French, natural colour-change sapphire and diamond cluster ring","description":"\u003cdiv class=\"sold\" style=\"background-color:#F4F2ED;  padding:1em; margin-bottom:10px;\"\u003e\n  \u003ch3\u003eThis ring is sold, sorry. See similar rings:\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMetal:  \u003ca href=\"https:\/\/www.antiqueringboutique.com\/collections\/all-gold-rings\"\u003egold rings\u003c\/a\u003e, \u003ca href=\"https:\/\/www.antiqueringboutique.com\/collections\/rose-gold-rings\"\u003erose gold rings\u003c\/a\u003e \u003c\/li\u003e \u003cli\u003eGems:  \u003ca href=\"https:\/\/www.antiqueringboutique.com\/collections\/sapphire-rings\"\u003esapphire rings\u003c\/a\u003e, \u003ca href=\"https:\/\/www.antiqueringboutique.com\/collections\/vintage-rings-diamond\"\u003ediamond rings\u003c\/a\u003e \u003c\/li\u003e \u003cli\u003eType of ring:  \u003ca href=\"https:\/\/www.antiqueringboutique.com\/collections\/1920s-art-deco-engagement-rings-vintage-antique\"\u003eArt Deco rings\u003c\/a\u003e, \u003ca href=\"https:\/\/www.antiqueringboutique.com\/collections\/cluster-rings\"\u003ecluster rings\u003c\/a\u003e \u003c\/li\u003e    \u003c\/ul\u003e\n\u003c\/div\u003e \u003cp\u003e\u003cstrong\u003eColour-change sapphire and diamond ring, 20th century. \u003c\/strong\u003eThis unheated Sri Lankan sapphire appears a subtle cornflower blue in daylight, and a soft violet in incandescent light. The reason for this unusual phenomenon is the presence of Chromium in the stone, which gives the stone its violet hue, and interacts with different colours of light to change the shade of the stone. The presence of Chromium also means that, unusually for a blue sapphire, it also fluoresces red. Under\u003cspan\u003e  \u003c\/span\u003eThe design is a classic cluster with touches of Edwardian inspiration, particularly in the millegrained settings of the diamonds, making it a beautiful and timeless choice for an engagement ring.\u003c\/p\u003e\n\n\n\u003cdiv style=\"text-align: center;\"\u003ePlace Of Origin\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cem\u003e\u003cstrong\u003eFrance\u003c\/strong\u003e\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\nStone Type\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003ca title=\"https:\/\/www.antiqueringboutique.com\/pages\/sapphire\" href=\"https:\/\/www.antiqueringboutique.com\/pages\/sapphire\"\u003eSapphire\u003c\/a\u003e: approx. 3.4 carats\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.antiqueringboutique.com\/pages\/about-diamond\" title=\"About diamond\"\u003eDiamonds\u003c\/a\u003e: approx. 0.60 carats total\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eAccompanied by GCS report no. 79227-83, stating that the sapphire is of Sri Lankan origin, with no indications of heat treatment.\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\nStone Dimensions\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cem\u003e\u003cstrong\u003eSapphire approximately 8.5 x 7.5 x 5.4mm\u003c\/strong\u003e\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\nHeight of setting:\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e7.5mm\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cem\u003eWidth of setting at front:\u003c\/em\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e17.2 x 15.5mm\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\nMetal Type\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cem\u003e\u003cstrong\u003e18 carat yellow gold\u003c\/strong\u003e\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\nMarks\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cem\u003e\u003cstrong\u003eFrench import assay mark for 18 carat gold\u003c\/strong\u003e\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\nDate Of Manufacture\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003e20th century\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\nPeriod Of Manufacture\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca title=\"https:\/\/www.antiqueringboutique.com\/pages\/art-deco\" href=\"https:\/\/www.antiqueringboutique.com\/pages\/art-deco\"\u003e\u003cem\u003e\u003cstrong\u003eArt Deco\u003c\/strong\u003e\u003c\/em\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\nCondition\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cem\u003e\u003cstrong\u003eVery good\u003c\/strong\u003e\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\nSigns Of Wear\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cem\u003e\u003cstrong\u003eVery minor wear commensurate with age\u003c\/strong\u003e\u003c\/em\u003e\u003c\/div\u003e","brand":"Antique Ring Boutique","offers":[{"title":"Default Title","offer_id":32978888884359,"sku":"ARB-221","price":12740.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0310\/0442\/6375\/products\/AntiqueSapphireEngagementRing_900x_3a2ca59a-cf5e-4aa8-a8df-93ac63ae5cdf.png?v=1635155561","url":"https:\/\/www.antiqueringboutique.com\/en-au\/products\/antique-art-deco-18ct-rose-gold-french-natural-colour-change-sapphire-and-diamond-cluster-ring","provider":"Antique Ring Boutique","version":"1.0","type":"link"}