Lac de Gras Lac de Gras Lac de Gras is a lake approximately north east of Yellowknife, in the Northwest Territories of Canada. Lac de Gras was the centre of the diamond rush of the 1990s. There are two working, and one closed, diamond mines in the area, Diavik Diamond Mine, Ekati Diamond Mine, and the care and maintenance Snap Lake Diamond Mine. It was called Ekati by aboriginal peoples. The lake is ultraoligotrophic but supports a slow-growing but stable population of some eight species of cold-water fishes, including round whitefish, cisco, and lake trout. Lake trout dominate the lake, both numerically and
Argyle diamond mine over a period of 18 months at a cost of A$450 million. The mine was commissioned in December 1985. "Several of this article's references contain excellent maps and photographs of the mine and examples of diamonds produced there, which cannot be placed in this article due to copyright limitations. The reader is especially directed to Shigley, Chapman, and Ellison's article, "Discovery and Mining of the Argyle Diamond Deposit, Australia" (Gems & Gemology, Spring 2001)." Argyle diamond mine The Argyle Diamond Mine is a diamond mine located in the East Kimberley region in the remote north of Western Australia. Argyle is