Rio Tinto's Diavik Diamond Mine in the Northwest Territories was in operation since 2003, and recently completed production in March 2026. It is currently undertaking decommissioning activities in preparation for closure and reclamation, which will continue until 2029. It has produced more diamonds than any other diamond mine in Canada, with over 150 million carats. 

Diavik is a leading example of a modern mine that was constructed with award-winning engineering, and which operated safely for its people, the communities, and with respect for the natural environment. Diavik’s goal is to become a leading example of a successfully closed mine, where closure activities are carried out responsibly, safely, on schedule, and with respect for the traditional knowledge of the original land users.