Art Deco emerald and diamond cluster ring. Set with a rectangular emerald-cut emerald to centre in an open back rubover millegrain setting with an approximate weight of 0.70 carats, set to top and bottom with two triangular step cut diamonds in open back rubover millegrain settings with a combined weight of 0.30 carats, flanked by two marquise shape old cut diamonds in open back rubover millegrain settings with a combined weight of 0.20 carats, further set with a single row border of round old single cut diamonds in open back grain and millegrain settings, all twenty four with a combined weight of 0.30 carats. The total approximate diamond weight is 0.80 carats, to an elegant marquise shape openwork cluster with an ornate scrolling gallery, intricate piercing and backholing, flanked by engraved shoulders tapering down to a solid D-shape shank. Tested white gold and platinum, numbered '10', circa 1925.
