Antique Art Deco diamond platinum engagement ring, circa 1920. This platinum Art Deco engagement ring features a .67 carat old European cut center diamond. The diamond has VS2 clarity and K color. There are four old European cut accent diamonds at .05 carat total weight. The accent diamonds have VS2-SI2 clarity and H-I color, one is chipped. This ring is very well made with filigree work on the sides and double milgrain detailing. The center diamond is bead set and the accent diamonds are pave set. The ring has a replaced shank, which was well done. This Art Deco engagement ring weighs 2.74 grams, is a size 6.5, and is appraised at $3,500.