An Art Deco emerald and diamond ring, circa 1925Set to the centre with an old brilliant-cut diamond, issuing a radiating design of similarly-cut diamonds and calibré-cut emeralds, between bifurcated shoulders set with old brilliant and single-cut diamonds, mounted in platinum and gold, diamonds approx. 0.70ct total, one emerald deficient and one possible emerald replacement, ring size approx. O (sizing beads)