Translated from NOS TV in the Netherlands:
Miners in Botswana have discovered the largest diamond found in over a hundred years. The 1111-carat gem, slightly smaller than a tennis ball, was unearthed in the Karowe mine in central Botswana. The value has to be determined yet.
This three-year-old mine is exploited by a Canadian mining company.
The so-called Lucara diamond is the second largest rough diamond ever found. Only the Cullinan, which was found in 1905 in South Africa, was bigger. That stone was later cleaved and polished in Amsterdam and was inter alia made a part of the British royal scepter.
See also about this in Dutch daily De Stem.