Emerald and diamond tiara.  Photo Sotheby's

The tiara designed as a series of graduated scrolls highlighted with three sprays each set with cabochon emerald drops, set with rose, French-, single- and circular-cut diamonds, inner circumference approximately 325mm, each jewel detachable, can be worn as a pair of earrings and a brooch, maker's marks, earrings with clip fittings. Estimate 15,000-20,000 GBP. Lot Sold: 20,625 GBP

Sotheby's. Fine Jewels. London | 14 Dec 2011 www.sothebys.com