A Gorgeous Antique Platinum Diamond Wedding Band Ring, Vintage Art Deco Eternity Band with Heart Motif, circa 1930. This wonderful classic antique ring holds twelve antique single cut diamonds set in a beautiful heart motif platinum Art Deco setting. The ring measures about 5mm wide and about 3/4 inch across from side to side. Ring Size: about 7 1/4. This ring dates to the Art Deco Era, circa 1930's and is in lovely vintage condition.