Jade of Quebec
The jade in Quebec is found in the serpentines associated with asbestos mines. At the raw state, jade is difficult to distinguish from the serpentine at a glance because the color and texture of these two stones are very similar.
Jade found in the Black Lake mine is more common than the jade found in the Jeffrey mine in Thetford Mines. The first one has a bluish tint and the second one has pale green spots.