Ornate diamond ring, American, circa 1950. A platinum and iridium ring set with one central round old cut diamond bead set in a millegrain box collet with an approximate weight of 0.40 carats, surrounded by a horizontal openwork geometric bezel set with six marquise shaped old cut diamonds in millegrain collet settings with an approximate total weight of 0.60 carats, and twenty eight round old cut diamonds in millegrain bead settings with an approximate total weight of 0.60 carats, on a tapered knife edge shank, and with an approximate combined diamond weight of 1.60 carats.
