Art Deco diamond cluster ring. Set vertically to centre with three round old cut diamonds in open back grain settings with a combined approximate weight of 1.20 carats, further set with eighteen round old cut diamonds in open back grain settings with a combined weight of 0.75 carats. The total approximate diamond weight is 1.95 carats, to a geometric openwork cluster featuring millegrain details, a linear gallery and intricately pierced backholing, leading to slightly raised shoulders with ribbed detail and flowing through to a solid D-shape shank. Marked platinum, French, circa 1930.
