GABORONE - Canada's Lucara Diamond Corp has discovered a 2,492 carat diamond at its Karowe Mine in Botswana, the company said late Wednesday, one of the largest stones to be excavated.
Lucara did not reveal the stone's gem quality but its size would make it the second largest rough diamond discovered to date, after the 3,106 carat Cullinan Diamond found in neighboring South Africa in 1905. After being cut and polished, it became part of the British crown jewels.
The Karowe Mine is known for producing large stones, with other significant finds including the 1,758 carat Sewelo and the 1,109 carat Lesedi La Rona diamonds.
The company presented the diamond to Botswana's President Mokgweetsi Masisi on Thursday. Botswana is the world's top diamond producer by value.
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The southern African country last month proposed a law that will ask mining companies, once granted a license, to sell a 24 percent stake in mines to local investors unless the government exercises its option to acquire the shareholding.
