{"id":932675,"date":"2023-11-04T14:14:34","date_gmt":"2023-11-04T14:14:34","guid":{"rendered":"https:\/\/www.antiquejewellerycompany.com\/us\/?post_type=product&#038;p=932675"},"modified":"2025-10-27T16:29:22","modified_gmt":"2025-10-27T16:29:22","slug":"early-20th-century-18ct-gold-colour-change-sapphire-transition-cut-diamond-cluster-ring","status":"publish","type":"product","link":"https:\/\/www.antiquejewellerycompany.com\/us\/shop\/early-20th-century-18ct-gold-colour-change-sapphire-transition-cut-diamond-cluster-ring\/","title":{"rendered":"Early 20th Century 18ct Gold, Colour Change Sapphire &#038; Transition Cut Diamond Cluster Ring"},"content":{"rendered":"<p>A stunning\u00a0<span class=\"glossary-tooltip glossary-term-373185\" tabindex=\"0\"><span class=\"glossary-link\"><span class=\"glossary-underline\">18ct<\/span><\/span><\/span> <span class=\"glossary-tooltip glossary-term-372792\" tabindex=\"0\"><span class=\"glossary-link\"><span class=\"glossary-underline\">gold<\/span><\/span><\/span> ring that has been set with a just under two carat\u00a0colour change\u00a0<span class=\"glossary-tooltip glossary-term-372816\" tabindex=\"0\"><span class=\"glossary-link\"><span class=\"glossary-underline\">sapphire<\/span><\/span><\/span>\u00a0that displays purple hues. The colour shift is from blue in daylight to bluish-purple in incandescent light. Blue sapphire is coloured by iron and titanium. The violet colours are because there are traces of vanadium. It is surrounded by twelve old mine cut diamonds that have a total estimated weight of just under one carat.\u00a0 It was made circa 1910 and was imported in to France.<\/p>\n<p>It would make a marvellous engagement ring.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A stunning\u00a018ct gold ring that has been set with a just under two carat\u00a0colour change\u00a0sapphire\u00a0that displays purple hues. The colour shift is from blue in daylight to bluish-purple in incandescent light. Blue sapphire is coloured by iron and titanium. The violet colours are because there are traces of vanadium. It is surrounded by twelve old [&hellip;]<\/p>\n","protected":false},"featured_media":1000000928137,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[],"product_tag":[],"class_list":{"1":"product","6":"type-vintage-engagement-rings","7":"type-vintage-rings","8":"period-edwardian","9":"ollys-picks-all","10":"material-diamond","11":"material-gold","12":"material-metals","13":"material-precious-stones","14":"material-sapphire","15":"collection-christmas-gifts","16":"collection-gifts-for-her","17":"collection-gifts-to-wow","18":"ring-styles-cluster","19":"ring-central-stone-sapphire","20":"gold-carat-18-carat-gold","22":"first","23":"instock","24":"taxable","25":"shipping-taxable","26":"purchasable","27":"product-type-simple"},"acf":[],"yoast_head":"<title>Early 20th Century 18ct Gold, Colour Change Sapphire &amp; Transition Cut Diamond Cluster Ring (447W) | The Antique Jewellery Company<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.antiquejewellerycompany.com\/us\/shop\/early-20th-century-18ct-gold-colour-change-sapphire-transition-cut-diamond-cluster-ring\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Early 20th Century 18ct Gold, Colour Change Sapphire &amp; Transition Cut Diamond Cluster Ring\" \/>\n<meta property=\"og:description\" content=\"A stunning\u00a018ct gold ring that has been set with a just under two carat\u00a0colour change\u00a0sapphire\u00a0that displays purple hues. 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