A Pair of Colored Diamond and Diamond Ear Pendants. Photo: Christie's Images Ltd

One ear pendant suspending a pear-shaped fancy yellow diamond, weighing approximately 52.78 carats, to the surmount set with a circular-cut diamond, weighing approximately 6.93 carats, the other ear pendant suspending a pear-shaped diamond, weighing approximately 50.31 carats, to the surmount set with a circular-cut fancy yellow diamond, weighing approximately 7.02 carats, mounted in 18k yellow and white gold. Estimate $4,500,000 - $6,500,000

With report 5141605476 dated 13 April 2012 from the Gemological Institute of America stating that the pear-shaped diamond, weighing approximately 52.78 carats, is fancy yellow, natural color, SI1 clarity

With report 11446284 dated 29 February 2012 from the Gemological Institute of America stating that the pear-shaped diamond, weighing approximately 50.31 carats, is K color, SI1 clarity 

With report 2141768026 dated 11 June 2012 from the Gemological Institute of America stating that the circular-cut diamond, weighing approximately 7.02 carats, is fancy yellow, natural color, VS1 clarity

With report 2145970882 dated 28 August 2012 from the Gemological Institute of America stating that the circular-cut diamond, weighing approximately 6.93 carats, is J color, VVS2 clarity 

Christie's. Magnificent Jewels. 16 October 2012. New York, Rockefeller Plaza