Centering an Old European cut diamond weighing app. 0.65ct., flanked by two Old European cut diamonds weighing app. 1.08ctw. (0.51, 0.57), all framed by a combination of Old European cut & Transitional Round Brilliant cut diamonds weighing app. 1.00ct., all in an east west filigree design with engraved shoulders, fashioned in platinum. Circa 1920. Size 7.5