Rio Tinto and Dominion Diamond Mines Oct. 1 revealed three of the finest large rough diamonds recovered from their Diavik Mine in Northwest Territories.

Collectively known as The Diavik Stars of the Arctic, these rough diamonds showcase a rare combination of size, quality and color from the Diavik diamond mine.

The Diavik Stars of the Arctic will headline Rio Tinto's forthcoming "Specials" Tend...