Old Mine Diamond and Emerald Target Ring, circa 1920

Old mine diamond and emerald target ring. Set with one central cushion shape old mine diamond in an open back rubover setting with an approximate weight of 1.10 carats, encircled by a single row of twelve calibre cut natural emeralds in open back channel settings with a combined approximate weight of 0.48 carats, further bordered by twenty-four round old cut diamonds in open back grain and rubover settings with a combined weight of 0.48 carats and decorated to the shoulders with four round old cut diamonds in open back grain settings with a combined weight of 0.04 carats. The total approximate diamond weight is 1.62 carats, to a circular target design featuring millegrain edging, a finely pierced linear gallery and fancy shape open backholing, the raised shoulders flowing through to a solid D-shape shank. Marked platinum and 18 carat yellow gold, French import marks, circa 1920.