The total deal price included acquisition amount of $500m and a further purchase price adjustment of $53m.
Also, the agreement included mine’s associated diamond sorting and sales facilities in Yellowknife, Canada, and Antwerp, Belgium.
Dominion Diamonds chairman and CEO Robert A. Gannicott stated: "We are very pleased to be able to bring our northern mining background, and diamond marketing skills, to bear on a project that is well constructed, well operated and well-endowed with resources that represent a promising future for shareholders, employees and northern stakeholders."
The Ekati mine comprises the core zone that includes the current operating mine and other permitted kimberlite pipes, alongside the buffer zone that houses kimberlite pipes having both development and exploration potential.