A pair of diamond and black diamond "hedgehog" ear clips, by Jar

Each designed as a pavé-set black diamond hedgehog, extending baguette-cut diamond spines, mounted in silver and 18k gold, with French assay marks and maker's marks, in a JAR pink leather case. Signed JAR, Paris. Est. $20,000 - $30,000

Literature: Joel Rosenthal and Pierre Jeannet, JAR, Art Books International, Paris, 2002, plate 115

Christie's. Jewels: The New York Sale. 22 April 2009. New York, Rockefeller Plaza www.christies.com Photo: Christie's Images Ltd 2009