Centering a Round Brilliant cut diamond weighing app. 1.57ct. (I color, SI1 clarity), in a square mount flanked by two crescent shaped sapphires* measuring app. 3.0 x 1.0mm and 22 Single cut diamonds weighing app. 0.29ctw., in a filigree design with engraved shank. Circa 1930. Size 7.75GIA 1152895968*Stones are assumed to be simulants or synthetic as was typical in jewelry of this style/era.