Peridot and diamond ring. Set with a cushion shape old cut natural unenhanced peridot to centre in an open back rubover millegrain setting with an approximate weight of 4.50 carats, further set with twenty cushion shape old cut diamonds in open back grain set millegrain collets with an approximate combined weight of 4.00 carats, to a domed cluster with intricate linear openwork throughout, with elegant scrolling piercing to the conforming gallery, flanked by trumpeting openwork shoulders, and leading to a solid D-shape slim shank. Tested platinum, circa 1920.
