The 4,349-mile-long, three-mile-wide corridor would stretch from the Northwest Territories down through to southern parts of the nation.
Gahcho Kue Mining News
The 67.87-carat gem quality octahedron diamond, unearthed during production ramp-up, is the largest of its kind recovered to date at the remote mine.
There has been an unusual recovery at site of a high quality white, colourless and transparent diamond measuring approximately 1 millimetre in diameter.
Minister's approval comes on recommendation from aboriginal review board.
8.44 carats per tonne.