The second-largest diamond ever found - a rough 2,492-carat stone - has been unearthed in Botswana at a mine run by Canada firm Lucara Diamond. It is the biggest find since the 3,106-carat ...

A 2,492-carat diamond was unearthed at Botswana's famed Karowe mine this week by Canada's Lucara Diamond, one of the largest stones ever. Lucara Diamond, in a news release Wednesday, said the ...

The largest diamond found in more than a century has been unearthed at a mine in Botswana, and the country's president showed off the fist-sized stone to the world at a viewing ceremony Thursday.