Art Deco diamond cluster ring. Centrally set with a cushion shape old mine diamond in an open back grain setting with a weight of 0.70 carats, flanked to either side with two cushion shape old mine diamonds in open back grain settings with a combined weight of 2.06 carats, further enhanced to top and bottom with two cushion shape old mine diamonds in open back grain settings with a combined weight of 0.70 carats, embellished with two cushion shape old cut diamonds in open back grain settings with a combined weight of 0.22 carats and decorated with twelve round rose cut diamonds in open back cut down settings with a combined weight of 0.24 carats. The total approximate diamond weight is 3.92 carats, to a stylish geometric cluster featuring intricate step details, polished square collets, pierced linear gallery and shaped backholing, the slightly raised open shoulders curve to a solid D-shape shank. Marked platinum, French, circa 1925.
