Edwardian turquoise and diamond coronet cluster ring. Set to center with a round cabochon cut natural turquoise in an open back claw setting, with an approximate weight of 1.20 carats, encircled by ten cushion shape old mine diamonds in open back claw settings, with a combined approximate weight of 1.50 carats, flanked by two cushion shape old mine diamonds set in an open back grain settings with a combined weight of 0.20 carats. The total approximate diamond weight is 1.70 carats to an elegant coronet cluster design featuring curving claws, a decoratively pierced gallery and fancy open backholing, leading to broad shoulders and flowing through to a tapered D-shape shank. Tested yellow gold and platinum, circa 1905.
