Vintage Art Deco Three Stone Sapphire & Diamond Engagement Ring in PlatinumThis vintage Art Deco three stone sapphire diamond engagement ring is simply stunning. Sapphires and diamonds are a perfect match, emphasizing contrast and cool tones of both gemstones. The . 95 carat round cut sapphire is flanked by two glittering old European cut diamonds. The three main gemstones are all set with prongs that emerge from an intricate basket mounting crafted in platinum and is a gorgeous example of Art Deco sensibility and style.