1950s Diamond Solitaire Engagement Ring in Platinum

1950s diamond solitaire engagement ring in platinum. Set with an estimated 0.90ct round Old European cut diamond in a claw setting, flanked to either side with four round Old European cut diamonds in floating square collet settings, to a fancy solitaire design with geometric styling, curving claws and met to either side with broad inwardly champfered shoulders which smooth to a solid shank. Marked platinum.