Though still a newcomer as a supplier of rough diamonds, Canada is now among the world’s most important diamond producers by both weight and value. The lead article in this issue reviews the history of diamond exploration in the “Great White North,” with particular emphasis on the kimberlites of the Northwest Territories. Also discussed are the current manufacturing, sales, and marketing of Canadian diamonds. All of the diamonds shown here are from Canada’s Ekati Diamond Mine™, which started production in 1998. The necklace, by Yellowknife jewelry designer François Thibault, contains 13 diamonds at 5.22 ct total weight. The loose round brilliant cuts weigh a total of 6.73 ct (largest 1.29 ct); and the crystals weigh a total of 20.31 ct (largest, the yellow octahedron, 6.06 ct). Necklace and diamonds courtesy of BHP Billiton Diamonds Inc. Photo © GIA and Harold & Erica Van Pelt; leaf © Digital Stock Images.