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An Art Deco diamond and emerald dress ring, circa 1930, centring on a circular-cut diamond weighing
An Art Deco diamond and emerald dress ring, circa 1930, centring on a circular-cut diamond weighing approximately 0.85 carats, within an elaborate openwork mount set with circular-cut diamonds, accented with channel-set stripes of calibré-cut emeralds, mounted in platinum, size M, later shank with British hallmarks