Harry Winston Diamond Corporation engages in mining and retailing diamonds, including rough diamonds worldwide. It has a 40% ownership interest in the Diavik Diamond Mine located in the Northwest Territories, Canada. The company, through its subsidiary, Harry Winston, Inc., involves in retailing fine jewelry and timepieces. It also sells timepieces through a network of independent distributors. The company was founded in 1980. It was formerly known as Aber Diamond Corporation and changed its name to Harry Winston Diamond Corporation in 2007. The company is headquartered in Toronto, Canada.