692 carat rough diamond
Credit: Lucara

1,080 and 692 carat Diamonds Unearthed in Botswana

Lucara Diamond Corp’s Karowe mine is having an exceptional August. After extracting a 1,080 carat diamond a few weeks ago, they have reported the discovery of another noteworthy crystal weighing 692.2 carats.

1,080 carats

The 1,080 carat diamond measures 82.2mm by 42.8mm by 34.2mm. It’s a white stone described by Lucara as “top high quality.”

This is the fourth diamond weighing over 1,000 carats extracted from the mine’s South Lobe since 2015. The others were the 1,109 carat Lesedi La Rona in 2015, the 1,758 carat Sewelô in 2019 and a 1,174-carat diamond in 2021.

1080 carat rough diamond
Credit: Lucara

692 carats

The 692 carat crystal measures 46.5 x 40.7 x 28.4 mm. It’s also a high white Type IIa gem-quality stone.

This is the fourth rough diamond weighing more than 300 carats recovered this year, and one of more than 20 rough diamonds weighing over 100 carats recovered at Karowe in 2023.

692 carat rough diamond
Credit: Lucara

According to new CEO William Lamb:

The recovery of large diamonds from the EM/PK(S) lithology of the South Lobe strongly supports our expectations for the underground project where the majority of material mined will constitute this phase of kimberlite during the first years of underground production.

Lamb, who first served as Lucara CEO from May 2011 to February 2018, took that role over again earlier this month. He replaces outgoing CEO Eira Thomas.

Angi Butler

Angi's first career was in diamond, gemstone and fashion jewelry sales. Now a corporate executive, she shares her advice and opinions on these pages.

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