The Botswana government says the huge 2,492-carat stone is the second-biggest ever discovered in a mine. It's the biggest diamond found since 1905. The as-yet-unnamed diamond was presented to the ...

Recently a 2492 carat diamond weighing over a pound was found in Botswana in southern Africa. Diamonds are formed by carbon particles, black coal, being put under extreme pressures for long periods of ...

Jewelry designer Nina Runsdorf was at a trade show in the early 2000s when a “large brown rock" the size of a pebble caught ...