Diamond cocktail ring. Set with thirteen round old cut diamonds in open back rubover and grain settings with a combined approximate weight of 0.50 carats, to a stylised floral design with a quatrefoil shape step down border, polished edges and pierced open backholing, the trumpeting shoulders tapering to a solid D-shape shank. Tested yellow gold with platinum settings, 'engraved D.G. D.A. 18.104.22.168', circa 1945.