A rectangular-cut diamond ring

The rectangular-cut diamond weighing 30.52 carats to the graduated baguette-cut diamond bifurcated shoulders and hoop, mounted in platinum, ring size 6.0. Estimate on request. Price Realized CHF3,459,000 ($3,131,349)

Accompanied by report no. 17487138 dated 11 September 2008 from the GIA Gemological Institute of America stating that the diamond is D colour, Flawless clarity, Excellent Polish, Excellent Symmetry.

With a note stating that the diamond is classified as a Type IIa diamond

Christi'es. jewels : The Geneva Sale. 13 May 2009. Geneva www.christies.com