Art Deco sapphire and diamond cluster ring. Set centrally with a rectangular step cut natural unenhanced Thai sapphire in an open back rubover setting with an approximate weight of 1.40 carats, flanked by two tapered baguette cut diamonds in open back rubover settings with a combined weight of 0.50 carats, further set with ten cushion shape french cut diamonds in open back channel and rubover settings with a combined weight of 0.45 carats, and adorned with twenty round old cut diamonds with a combined weight of 0.45 carats. The total approximate diamond weight is 1.45 carats to an impressive cluster design featuring polished and millegrain edges, intricate openwork, and fancy open backholing, the integrated shoulders flowing through to a solid D-shape shank. Tested platinum, circa 1925, accompanied by American Gemological Laboratories (AGL) report #1111165.
