A pair of diamond and platinum clips, by Suzanne Belperron. photo: Christie's Images Ltd 2010

Each designed as a foliate cluster, the polished platinum vine extending bezel-set old European-cut diamond flower buds and old European and single-cut diamond leaves, mounted in platinum and 18k white gold, circa 1935, with French assay marks, (with 18k white gold detachable ear clips of later addition). With maker's mark for Suzanne Belperron - Est. $40,000 - $60,000. Price Realized $50,000

Christie's. Jewels: The New York Sale, with The Catherine the Great Emerald Brooch and The Emperor Maximilian Diamond. 22 April 2010. New York, Rockefeller Plaza www.christies.com