Williamson is Tanzania’s only important diamond producer. The mine is an open pit operation based upon the 146 hectare Mwadui kimberlite pipe, which is the world’s largest economic kimberlite to have seen continuous mining.

Williamson is renowned for beautifully rounded white goods and ‘bubblegum’ pink diamonds, including the 23 carat Williamson Pink (54 carat rough stone), which is considered to be one of the finest pink diamonds ever recovered.