Centering a Round Brilliant cut diamond weighing app. 1.21ct. (H color, VS1 clarity), in a square frame with open work buckle motif sides, set with 24 Transitional Round Brilliant cut diamonds weighing app. 0.50ctw., fashioned in platinum, with engraved shoulders. Circa 1935 (center stone later than ring). Size 6.75GIA 5151624569