Vintage Engagement Ring, RBC 0.60ct

Centering a Round Brilliant cut diamond weighing app. 0.60ct.(E-F color, VS1 clarity), in a four prong mount, flanked by four Round Brilliant cut diamonds weighing app. 0.16ctw. in a tapered setting, fashioned in platinum. Unidentified maker's mark. Circa 1960. Size 6.5. EGL US69486201D