Jade and diamond cluster ring. Set to the centre with an oval cabochon natural unenhanced jade in an open back rub over setting with an approximate weight of 2.60 carats, encircled by twenty round eight cut diamonds in open back grain settings with a combined approximate weight of 0.50 carats, to a elegant coronet cluster design featuring polished edges, pierced structural gallery and shaped backholing, flanked by diamond set shoulders with cheniers flowing through to a solid flat shank. Marked platinum, circa 1940, accompanied by a Gemmological Certification Services certificate #79197-92.
