Coral, emerald, ruby and diamond bracelet, Michele della Valle.

Coral, emerald, ruby and diamond bracelet, Michele della Valle. photo courtesy Sotheby's

Suspending five carved coral skulls, accented with circular-cut rubies and emeralds and brilliant-cut diamonds, some of black tint, to a bone diamond set chain, mounted in white and blackened gold, length approximately 175 mm, maker's marks. Est. 6,000—9,000 CHF. Lot Sold 23,750 CHF

Sotheby's. Magnificent Jewels, 16 Nov 10, Geneva www.sothebys.com