A magnificent diamond ring, by M. Gérard. Photo Christie's Image Ltd 2013

Set with a pear-shaped diamond, weighing approximately 23.43 carats, ring size 5¼ with ring sizer, with French assay mark for gold, in navy blue leather M. Gérard case. Signed M. Gérard, no. 3185. Estimate CHF2,300,000 - CHF3,300,000

Accompanied by report no. 691612 dated 7 December 2012 from the GIA Gemological Institute of America stating that the diamond is D colour, VVS1 clarity, a working diagram indicating that the clarity of the diamond may be potentially Internally Flawless, and a Diamond Type Classification letter stating that the diamond is Type IIa

Christie's. MAGNIFICENT JEWELS. 15 May 2013. Geneva