Lucara finds unbroken 549-carat diamond, fourth-largest mined at Karowe

Canada’s Lucara Diamond (TSX:LUC) has found an unbroken 549-carat white diamond at its prolific Karowe mine in Botswana, the same asset that last year yielded the 1,758-carat Sewelô (“rare find”), the second-largest diamond ever mined. The new stone, which the company said...