A Highly Important 30.15 carats Pear-shaped Diamond Ring

Set with a pear-shaped diamond weighing 30.15 carats, to the baguette-cut diamond shoulders, mounted in platinum, ring size 6. Accompanied by report no. 16882330 dated 26 February 2008 from the GIA Gemological Institute of America stating that the diamond is D colour, VS1 clarity

And accompanied by report no. 0809093 dated 18 September 2008 from the Gübelin Gem Lab stating that the diamond is classified as a Type IIa diamond

Estimate CHF2,900,000 - CHF3,400,000 ($2,480,742 - $2,908,456)

Notes : Along with its important size, this diamond posses a superb luminousness and brilliancy. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency. In addition to its beautiful shape and antique cutting style, its surface luster appears to have a light softness, a gentlness that is both gleaming and striking. This diamond combines limpid transparency, extreme brilliance and sophistication reserved for only the finest diamonds.

Christie's. Jewels : The Geneva Sale. 20 November 2008. Geneva. Image Christie's Ltd 2008 - www.christie's.com