A  4.31 carats square step-cut diamond single-stone ring

The square step-cut diamond, weighing 4.31 carats, between baguette-cut diamond shoulders, to a plain hoop, ring size K½. Sold for £10,800

Bonhams. Fine Jewellery, 4 Dec 2008. New Bond Street. Copyright © 2002-2008 Bonhams 1793 Ltd., Images and Text All Rights Reserved. www.bonhaùs.com