Gold, feather and diamond brooch, early 20th century.  photo Sotheby's

Designed as a stylised dandelion seed head, accented with rose-cut diamonds and decorated with small sections of ostrich feather to a polished stem, seed head detachable, French assay and maker's marks. Estimate 2,500—3,500 GBP. Lot Sold 5,000 GBP

Sotheby's. Jewels.17 Mar 11.London www.sothebys.com