The diamond mine at which Sue works, Karowe Mine, has found a massive 1111 carat diamond which is the largest diamond found in the last century and the 2nd largest diamond ever found.
It is second only to the Cullinan diamond which was over 3000 carats, it was later cut into smaller diamonds for the English crown jewels.
Karowe Mine has recently found numerous big diamonds; 813 carat stone and a 374 carat stone. The former being the 6th largest diamond ever found.
Pete & Sue in Botswana 
The mind boggles – how lovely