Miners in southern Africa have found one of the world's largest diamonds. It's nearly flawless and weighs almost 500 carats.

Reuters has more:

The diamond was discovered in the Letseng Mine on September 8, the company said in a statement. It has been analyzed by experts in Antwerp and found to weigh 478 carats, with very few inclusions and of outstanding color and clarity.

"It has the potential to yield one of the largest flawless D color round polished diamonds in history," the company said.

Letseng is one of the most productive mines in history — four of the world's 20 largest rough diamonds have been found at the mine, including the three largest found this century.

Diamond

And given the complicated, sometimes shameful relationship between the diamond industry and the continent, of course there's this (emphasis ours):

The minister for natural resources in Lesotho, an impoverished mountain kingdom in eastern South Africa, praised the productivity of the mine, one of the highest in the world at more than 10,000 feet.

Letseng is 70 percent owned by Gem Diamonds and 30 percent owned by the government of Lesotho.