Vintage Art Deco Sapphire & Diamond Engagement RingVintage Art Deco Sapphire Diamond Engagement Ring. This delightful Art Deco ring features a 1. 43 carat round cut sapphire with . 186 carats of gorgeous diamonds tapered down the shoulders and is finished in platinum. The dark blue sapphire really sparkles against the bright polished platinum making this a dazzling option for a less traditional engagement ring. The open basket from the side profile lets a good amount of light into the stone with a