A gold, emerald and diamond ring by O.J. Perrin, French, centring on a pyramid-shaped cabochon emerald mounted in a four-sided surround pavé-set with round-cut diamonds, the edges set with baguette-cut diamonds. Signed O.J.P PARIS and bearing French assay marks for 18K gold. Ring size 5 (US) or J½ (UK). Circa 1970.