Vintage 1930's Three Stone Diamond Ring in PlatinumVintage 1930s Three Stone Diamond Ring in Platinum. This fine Art Deco filigree ring features 1. 73 carats of Old European cut diamonds set beautifully in platinum. The main design feature of this mounting is the three diamonds bezel set in a line. Swirling around those three stones are neat open spaces that separate the many accent stones. The silhouette of ring is smooth and elegant, with many small details placed throughout the sparkling Art Deco