Art Deco natural sapphire ring with diamond set shoulders. A cushion shape old cut natural unenhanced Ceylon sapphire is set to centre with an approximate weight of 5.58 carats in an open back double claw setting, flanked by two vertical rows of round old single cut diamonds, eight in total with a combined weight of 0.16 carats in open back grain settings, to an openwork gallery with intricate square backholing and gently sloping shoulders, flowing down to a solid tapered D-shape shank. Tested platinum, circa 1935, accompanied by Gemmological Certification Services report #5774-224.
