Oscar Heyman Brothers emerald and diamond crossover ring. Set with a central tapered row of thirteen tapered baguette cut natural emeralds in open back rubover settings with an approximate combined weight of 0.70 carats, further set with sixteen round brilliant cut diamonds in open back rubover settings, with an approximate combined weight of 0.80 carats, to a crossover design featuring openwork with scalloped edging, an intricately pierced gallery and fancy open backholing, leading to integrated shoulders and flowing through to a solid D-shape shank. Marked platinum and iridium, Oscar Heyman Brothers, numbered '62900', American, circa 1950.
