A coloured  diamond ring.  Photo Christie's Image Ltd 2013 

Set with a fancy light pink pear-shaped diamond, weighing approximately 11.67 carats, to the pavé-set diamond openwork gallery and shoulders, mounted in gold, ring size 5¾. Estimate CHF1,000,000 – CHF1,200,000

Accompanied by report no. 10801371 dated 8 February 2013 from the GIA Gemological Institute of America stating that the 11.67 carat diamond is Fancy Light Pink colour, VVS1 clarity, and a Diamond Type Classification letter stating that the diamond is Type IIa

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