320ct. Rough Among Four Large Diamonds Unearthed from Karowe

Lucara Diamond Corp. recovered several large rough diamonds from a recent production run at its Karowe mine in Botswana, with the biggest weighing 320 carats.

That stone is a “stunning” gem-quality, light-brown diamond, Lucara said Wednesday. The miner discovered it together with a “magnificent” high-quality, 111-carat, type IIa white diamond and two white, type IIa stones weighing more than 50 carats. The company also unearthed “numerous” high-value diamonds above 10.8 carats, it noted.

Lucara retrieved all of the diamonds from direct milling of kimberlite ore from the EM/PK(S) area in Karowe’s south lobe, known for its large, high-value rough. It is currently working on an underground expansion of Karowe that will comprise more than 95% of ore from the EM/PK(S) portion of the site during its first three years of production.

“These diamond recoveries from the EM/PK(S) domain of the south lobe further validate the quality and potential of the Karowe diamond mine,” said Lucara CEO William Lamb. “We are thrilled with the consistent success we continue to achieve in uncovering large, high-value diamonds, reaffirming Lucara’s position as a leading producer of large, high-quality gem diamonds.”

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Main image: The four rough diamonds recovered, including the 320 carat. (Lucara Diamond Corp.)