Pair of onyx and diamond earrings and a cultured pearl and diamond ring, Michele Della Valle. Photo Sotheby's.

The earrings each of interlocking hoop design, set with onyx and brilliant-cut diamonds, pouch; the ring centring on a swing-set cultured pearl of brownish tint, the band pavé-set with brilliant-cut diamonds, 521/2; earrings and ring each signed della Valle, maker's marks. Estimation 10,000 — 15,000 CHF. Lot. Vendu 12,500 CHF

Sotheby's. Magnificent Jewels. Genève | 13 nov. 2013 - www.sothebys.com