Vintage diamond ring by Oscar Heyman Bros. Set with twelve round brilliant cut diamonds in open back claw settings with a combined approximate weight of 0.85 carats, to an elegant two row design with a finely pierced gallery and intricate backholing, flanked to the shoulders with raised curling 'X' motifs, and leading through to a solid ridged D-shape shank. Marked platinum and iridium, maker's mark for Oscar Heyman Brothers, numbered '301642', American, circa 1970.
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