Huge flawless 101.73 carat diamond, the 'Winston Legacy,' sells for a record $27 million

A pear-shaped colorless diamond, the largest ever offered at auction, sold for a record of nearly $27 million.

Auctioneer Christie's said the 101.73 carat "Winston Legacy" diamond, was bought by jewelry firm Harry Winston for $26.7 million on Wednesday in Geneva.

According to NBC News, the diamond was mined in Botswana and cut from a rough stone that weighed 236 carats. 

Christie's says it took 21 months to polish.

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