Art Deco emerald and diamond ring. Set with three square step cut natural emeralds with no colour enhancement in open back rubover and millegrain settings with a combined approximate weight of 0.35 carats, further adorned by ten tapered french cut diamonds in open back channel and millegrain settings with a combined approximate weight of 0.50 carats, to a stylish graduating band with a finely pierced gallery, decorative cheniers and geometric pierced backholing, the raised trumpeting shoulders continuing to a solid D-shape shank. Tested platinum, circa 1925.