Ceylon sapphire and diamond coronet cluster ring. Centrally set with a cushion shape old cut cut natural unenhanced Ceylon sapphire in an open back claw setting with an approximate weight of 2.70 carats, encircled by sixteen round eight cut diamonds in open back grain and rubover settings with an approximate combined weight of 0.50 carats, to an elegant coronet cluster featuring polished scalloped edges, an ornate openwork gallery and intricate open backholing, leading to tri-split shoulders, terminating in ridge detail and flowing through to a solid D-shape shank. Tested platinum, circa 1915, accompanied by Gemmological Certification Services report #5784-1568.
