Africa-focused miner Gem Diamonds has discovered another significant find at its prolific Letšeng mine in Lesotho—its 13th diamond over 100 carats this year. The latest recovery is a remarkable 212.91-carat Type II white diamond, unearthed on September 19th.

This is the third diamond exceeding 100 carats to be mined at Letšeng this September alone, underscoring the mine’s reputation for producing large and exceptional stones.

Type IIa diamonds, such as this one, are especially prized for their rarity and purity, containing little to no nitrogen atoms in their crystal structure, making them some of the most valuable gems in the world.

The Letšeng mine, 70% owned by Gem Diamonds, is renowned not only for its high-altitude location—situated 3,100 metres above sea level—but also for yielding the highest-dollar-per-carat kimberlite diamonds globally. It remains one of the world’s top diamond operations by revenue, consistently delivering high-quality, large stones that command top prices on the international market.