Art Deco Moonstone Diamond Ring

Centering a cabochon moonstone weighing app. 1.35ct., flanked by two emeralds measuring app. 3.5 x 3.0mm and additionally set with 34 Single cut diamonds weighing app. 0.80ctw., in a square design with with vertical scallop terminals, fashioned in platinum. Circa 1930. Size 6.75.