Vintage Diamond Engagement Ring, RBC 0.58ct

Centering a Round Brilliant cut diamond weighing app. 0.58ct. (F-G color, VS1 clarity), in a square, fishtail mounting, flanked by four bead set Single cut diamonds weighing app. 0.07ctw., in navette and diamond shaped settings with knife edge band, fashioned in platinum. Circa 1940. EGL US312826301D. Size 7.5.