Dominion Diamond Corporation engages in the mining and marketing of rough diamonds. It operates through Diavik Diamond Mine and Ekati Diamond Mine segments. The company holds 88.9% ownership interest in the Core zone and 72.0% ownership interest in Buffer zone of Ekati Diamond Mine; and a 40% ownership interest in the Diavik Diamond Mine located at Lac de Gras in Northwest Territories, Canada. It produces, sorts, and sells rough diamonds in Canada, Belgium, and India. The company was formerly known as Harry Winston Diamond Corporation and changed its name to Dominion Diamond Corporation in March 2013. Dominion Diamond Corporation was founded in 1980 and is headquartered in Yellowknife, Canada.