The second-biggest uncut diamond in history has been unearthed from a mine in Botswana by a Canadian mining company. 

Lucara Diamond Corp discovered the 1,758-carat diamond, which is larger than a tennis ball and weighs close to 352g.

Following the latest find, Lucara’s shares rose as much as 11.4% to the highest in more than two months before closing up 6.3% last week

The stone is second in size only to the famed 3,106-carat Cullinan Diamond, which was found near Pretoria in South Africa in 1905.

CEO of Lucara Diamond in a statement said “The significance of the recovery of a gem quality stone larger than 1,000 carats, the largest for more than a century, cannot be overstated”

Two other “exceptional” white diamonds – an 813-carat stone and a 374-carat stone – were also found at the Karowe mine.