Art Decodiamondsolitaire ring. Set to centre with a round old cut diamond in an open backgrain setting with an approximate weight of 0.70 carats, to a geometric design featuring a tiered stepped square frame, polished edges and pierced open backholing, flanked by gently sloping shoulders, tapering to a solid shank. Markedplatinum, circa 1930.
Art Deco diamond solitaire ring. Set to centre with a round old cut diamond in an open back grain setting with an approximate weight of 0.70 carats, to a geometric design featuring a tiered stepped square frame, polished edges and pierced open backholing, flanked by gently sloping shoulders, tapering to a solid shank. Marked platinum, circa 1930.