The "flawless" 100-carat white diamond was sold at auction in New York on Tuesday (21 April) for an eye-watering $22.1 million – equivalent to a cool £15million.
The emerald cut rock is incredibly rare. It is the largest of its kind to be considered "perfect" - of D colour and internally flawless even under intense magnification.
Gary Schuler, head of Sotheby's jewellery department in New York, told The Daily Mail: "This 100.2 carat diamond is the definition of perfection. The colour is whiter than white, it is free of any internal imperfections, and so transparent that I can only compare it to a pool of icy water."
The stone originally weighed in at 200-carats when it was mined in South Africa by De Beers.
It was then carefully shaped and polished before going around the world as part of the Sotheby's Magnificent Jewels Auction tour.
The incredibly precious diamond was estimated to be worth between $19million and $25million before it was sold to the anonymous buyer.
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