Art Deco emerald and diamond ring. Set with an octagonal emerald-cut natural Colombian emerald with no colour enhancement in an open back four claw setting with an approximate weight of 3.05 carats, flanked by two tapered baguette cut diamonds in open back rubover settings with a combined approximate weight of 0.40 carats, to a geometric design with a structured openwork gallery and pierced backholing, the shoulders continuing down to a solid D-shape shank. Marked 18 carat yellow gold and platinum, circa 1935, accompanied by Gemmological Certification Services report #5776-5266.
