A platinum and diamond single-stone ring

The Asscher-cut diamond weighing 3.53 carats to the brilliant-cut diamond line shoulders, with London hallmarks for platinum. Estimate £22,000 - £26,000 ($34,826 - $41,158)

Accompanied by report No. 2/985015-001 dated 29 January 2008 from the AnchorCert laboratory stating that the diamond is H colour, VVS2 clarity.

Christie's. Jewellery. 10 June 2009. London, King Street www.christies.com