Dominion Diamond Corp. March 6 reported an updated reserves and resources statement, which adds 3.9 million metric tons containing roughly 13 million carats to the mineral reserves at the Diavik diamond mine in Northwest Territories.

As of Dec. 31, 2014, the Diavik Diamond Mine had 18.1 million metric tons of proven and probable mineral reserves containing 53.3 million carats of diamonds.

At the A...