Art Deco rainbow moonstone and diamond ring. Set to centre with one oval cabochon natural unenhanced moonstone in an open back rubover setting with an approximate weight of 10.00 carats, further set with six round old cut diamonds in open back grain settings with a combined approximate weight of 0.16 carats, to an elegant flanked solitaire design featuring millegrain edging, and intricately pierced gallery with scalloped detail and fancy open backholing, flanked by trumpeting shoulders with millegrain borders flowing through to a solid tapering shank. Marked platinum, English, circa 1920.
