Sapphire and diamond ring by Oscar Heyman Bros. Set with twelve rectangular baguette cut natural unenhanced sapphires in open back rubover channel settings with a combined approximate weight of 1.02 carats, and fifteen rectangular baguette cut diamonds in similar settings with a combined approximate weight of 1.00 carats, to a striking three row design with ornate pierced backholing and continuing down to a solid ridged tapering shank. Marked 18 carat yellow gold, maker's mark for Oscar Heyman Brothers, numbered '31523', American, circa 1960, accompanied by Oscar Heyman Brothers authenticity certificate.
