{"product_id":"french-vintage-star-sapphire-ring","title":"French Vintage Star Sapphire Ring","description":"\u003cp class=\"p1\"\u003eA stunning antique French ‘star sapphire’ ring made in Paris, circa 1940. The ring is crafted in 18K yellow gold and features a 3ct star sapphire cabochon.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe milky blue sapphire displays ‘asterism’, which is a rare optical phenomenon that occurs when light hitting the surface of a cabochon gemstone reflects off parallel sets of fibrous inclusions, in turn causing a star-shaped reflection. This particular star sapphire displays a six-ray star with excellent clarity. For optimum viewing effect, it is best viewed in sunlight or from a single source of light.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe rare gemstone is set in an open-backed smooth yellow gold signet mount. The gold ring is stamped with a French ‘eagle head’ control mark which indicates that it was made in 18K gold in Paris.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eUK size L, US size 5.75\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe ring weighs 6.37 grams, the ring face measures 11mm north to south at the front, and tapers down to 2mm across at the back of the ring. It is in great condition and looks mesmerising when worn on a bright, sunny day.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e","brand":"Ravensbury Antiques","offers":[{"title":"Default Title","offer_id":48168864022836,"sku":"","price":2078.0,"currency_code":"CHF","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6784\/5428\/files\/0G2A0955.jpg?v=1724339122","url":"https:\/\/ravensburyantiques.com\/de-ch\/products\/french-vintage-star-sapphire-ring","provider":"Ravensbury Antiques","version":"1.0","type":"link"}