It is located in Marin County, California.
1,111-carat diamond found in Botswana
The Type IIa stone is the second-largest gem-quality diamond ever recovered, and the biggest find in more than a century.
It turned out to be the former, as he learned that workers at the company’s Karowe Mine in Botswana had recovered a “magnificent” stone: a 1,111-carat Type IIa diamond that goes down in the record books as the second-largest gem-quality diamond ever found.
Only the 3,106-carat Cullinan Diamond, which was discovered in January 1905 at the Premier mine in South Africa and later cleaved by Joseph Asscher, is bigger.
The machines scan pre-cleaned material recovered from diamond mines for large chunks of carbon.
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