One of the biggest diamonds in history has been discovered in the mountainous kingdom of Lesotho in southern Africa.
Gem Diamonds Ltd. found the 910-carat stone, about the size of two golf balls, at its Letseng mine in the country. It’s a D color Type IIa diamond, which means it has very few or no nitrogen atoms and is one of the most expensive stones. The diamond is the fifth-biggest ever found.
The Letseng mine is famous for the size and quality of the diamonds it produces and has the highest average selling price in the world. Gem sold a 357-carat stone for $19.3 million in 2015 and in 2006 found the 603-carat Lesotho Promise.
“This exceptional top-quality diamond is the largest to be mined to date and highlights the unsurpassed quality of the Letseng mine,” Chief Executive Officer Clifford Elphick said in a statement.
The three large discoveries will raise investor confidence that the company has overcome a shortage of large stones and that it can recover the biggest diamonds without breaking them. Gem found at least seven stones bigger than 100 carats in 2017 and five the year before. It recovered a dozen exceeding 100 carats in 2015.
The biggest diamond discovered is the 3,106-carat Cullinan, found near Pretoria, in South Africa, in 1905. It was cut to form the Great Star of Africa and the Lesser Star of Africa, which are set in the Crown Jewels of Britain. Lucara’s 1,109-carat Lesedi La Rona is the second-biggest, with the 995-carat Excelsior and 969-carat Star of Sierra Leone the third- and fourth-largest.
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