Oscar Heyman Brothers diamond cluster ring. Set with thirty seven round brilliant cut diamonds in open back grain settings with an approximate combined weight of 1.22 carats, to a bold three row design with polished edges and intricate honeycomb open backholing, the broad integrated shoulders flow through to a solid tapering D-shape shank. Marked platinum and iridium, maker's mark for Oscar Heyman Brothers, numbered 'W3235', American, circa 1970.
