Vintage Art Deco Sapphire Engagement Ring in PlatinumVintage Art Deco Sapphire Engagement Ring in Platinum. This incredible Art Deco ring features a dazzling 1. 79 carat round cut sapphire with . 16 carats of diamond and sapphire accents and is finished in platinum. The ring is quartered into four sections around the primary stone and the most notable are the swooping milgrained wires that form a chalice to hold the accent diamonds. The dainty channel of square cut sapphires adds a bit more of the