Centering an Old European cut diamond weighing app. 1.00ct. (I color, VVS2 clarity), in a square mount framed by four diamond shaped emeralds* measuring app. 1.5mm and ten Single cut diamonds weighing app. 0.17ctw., in a stepped, geometric filigree design, fashioned in platinum. Circa 1930. Size 6GIA 1152893641*Stones are assumed to be simulants or synthetic as was typical in jewelry for this style/era.