{"product_id":"riker-brothers-american-art-deco-platinum-sapphire-diamond-ring","title":"Riker Brothers American Art Deco Platinum Sapphire \u0026 Diamond Ring","description":"This vintage Riker Brothers ring, crafted in platinum circa 1920, features a geometric cluster design with intricate openwork and millegrain edging. At its center is a diamond-shape step-cut unheated blue sapphire weighing approximately 0.90 carats, set in an open-back rubover setting. Surrounding it are twenty round old cut diamonds with an approximate combined weight of 0.70 carats, secured in open-back grain and rubover settings. The decoratively pierced gallery and scrolling openwork shoulders lead to a ribbed flat shank; the ring is size 5 (US) and can be resized. It is accompanied by Gemmological Certification Services report.","brand":"The Jewelers Circle","offers":[{"title":"Default Title","offer_id":63578964492657,"sku":null,"price":12645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/2879\/0571\/files\/B2C69fe391d944921.83176915.jpg?v=1778268465","url":"https:\/\/jewelerscircle.com\/products\/riker-brothers-american-art-deco-platinum-sapphire-diamond-ring","provider":"The Jewelers Circle","version":"1.0","type":"link"}