A cultured pearl and diamond necklace, by Van Cleef & Arpels. Photo Christie's Image Ltd 2014

Composed of thirty-eight graduated grey cultured pearls, measuring approximately 13.6 to 9.8 mm, to the pavé-set diamond barrel-shaped clasp, mounted in gold, 52.5 cm. Signed and with maker's mark for Van Cleef & Arpels, no. 132225SA. Estimate CHF15,000 – CHF20,000 ($17,091 - $22,788)

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014, Geneva -http://www.christies.com/