Emerald and Diamond necklace, J. Roca, 1970s. Photo Sotheby's

Designed as a series of navette-shaped links set with brilliant-cut, pear- and marquise-shaped diamonds, accented with circular-cut and pear-shaped emeralds, length approximately 410mm, signed J. Roca, maker's mark. Estimation 9,000 — 12,000 GBP

Sotheby's. Fine Jewels, London | 16 juil. 2014, 10:00 AM -www.sothebys.com