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.
