Oscar Heyman Brothers vintage diamond cluster ring, American, circa 1960.
Oscar Heyman Brothers vintage diamond cluster ring. Set with fifty five round brilliant cut diamonds in open back grain settings with a combined weight of 2.75 carats, flanked by two curving rows of channel set square baguette cut diamonds in open back rubover settings, twenty eight in total with a combined weight of 1.12 carats. The total approximate diamond weight is 3.87 carats, to a domed bombe cluster with intricate honeycomb and square backholing, conforming smoothly to the finger and tapering at the shoulders to a solid D-shape shank. Marked platinum and iridium, marked 'HBR', numbered '26714', American, circa 1960.