LONDON, ENGLAND - SEPTEMBER 09:  A Sotheby's employee holds the largest D colour, Flawless, Type IIa white oval diamond to come to auction on September 9, 2013 in London, England. The 118.28 carat stone, estimated at US $ 28-35 million, will be offered for auction in Hong Kong at their Magnificent Jewels and Jadeite sale on October 7, 2013.  (Photo by Peter Macdiarmid/Getty Images)
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