Emerald and Diamond Ring, Mount by Van Cleef & Arpels

Oval cabochon-cut emerald, circular and calibré-cut diamonds, ring size O, signed Monture VCA, numbered.  Available at Christie’s London Important Jewels Auction on June 13, 2018.  Estimate: GBP 10,000 – GBP 15,000 (USD 13,270 – USD 19,905)