A Belle Epoque emerald and diamond ring, circa 1918
The central step-cut emerald surrounded by a border of old brilliant-cut diamonds, set within a finely pierced navette-shaped diamond-set plaque, to the calibré-cut emerald detail, to the shoulders of diamond-set bow motif, with pierced gallery and plain hoop, mounted in platinum, emerald weighing approximately 3.00 carats, diamonds approximately 1.15 carats total,