This vintage Rene Boivin cocktail ring, circa 1950, features a central round old cut diamond of approximately 1.00 carat set in platinum. The diamond is flanked by two curving rows of rectangular French-cut emeralds and rubies, each set in 18kt yellow gold and platinum with an approximate combined weight of 2.20 carats. These stones are all mounted on a heavy sculpted tapered band made from rock crystal. This ring comes with supporting documentation confirming its origin from the renowned Parisian expert Francoise Cailles. Please note that this size 5.5 (US) ring cannot be resized.