A secret buyer has snapped up this diamond from Botswana for $63m (£44m):
This makes it the world’s most expensive rough diamond, according to CNN Money.
AOL news gives a sense of the scale of the 813 carat gem – saying it is roughly 407 times the size of the average US engagement ring.
It was recovered from the Karowe mine in Botswana in November last year by the Canadian mining company Lucara and sold to a Dubai-based firm, reports Jewellery
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