Looking After Your Finds - Reference
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Constellation Diamond: $80.7 million (£63.3m)
©Courtesy Lucian Coman Lucara Constellation
This gigantic 813-carat rock holds the world record for the most expensive rough diamond, selling for $63.1 million in 2016, or $80.7 million (£63.3m) today.
The largest diamond to be discovered in over a century, the Constellation Diamond was mined in 2015 by the Lucara Diamond Corp from its Karowe mine in Botswana and sold to jeweller De Grisogono.
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