A diamond pendant.  Photo: Christie's Images Ltd., 2010

Set with an inverted pear-shaped diamond weighing 3.03 carats suspending an oval-cut diamond weighing 2.01 carats and a pear-shaped diamond weighing 10.03 carats, to the fine link chain, mounted in white gold, pendant 4.6 cm, chain 40.0 cm - Estimate CHF1,200,000 - CHF1,500,000 ($1,233,868 - $1,542,335)

Accompanied by report no. 5111794421 dated 1 June 2010 from the GIA Gemological Institute of America stating that the 10.03 carats pear-shaped diamond is D colour, Internally Flawless clarity

Report no. 2115326601 dated 16 November 2009 from the GIA Gemological Institute of America stating that the 3.03 carats pear-shaped diamond is D colour, Internally Flawless clarity

Report no. 17456123 dated 15 July 2008 from the GIA Gemological Institute of America stating that the 2.01 carats oval-shaped diamond is D colour, Internally Flawless clarity

Christie's. Jewels: The Geneva Sale, 17 November 2010. Geneva www.christies.com