Oscar Heyman Brothers diamond 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 three row half band design with polished edging and intricate honeycomb backholing, the integrated shoulders tapering to a solid D-shape shank. Marked platinum and iridium, maker's mark for Oscar Heyman Brothers, numbered 'W3235', American, circa 1950.
