Botswana has unearthed a 2,492-carat rough diamond at the Karowe mine, the largest find in over a century and the second-largest ever recovered from a mine.

Some of the most extraordinary gems ever found belong to a rare class of diamonds known as CLIPPIRs (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular, Resorbed). They make up…

Botswana has unearthed a 2,492-carat rough diamond at the Karowe mine, the largest find in over a century and the second-largest ever recovered from a mine.