|Green jade is the provincial stone of British columbia, a very beautiful and hard gemstone. It is also called BC jade.
Canada has the richest nephrite deposits and is one of the largest producing and exporting countries..
There are over 50 known nephrite occurrences in
British Columbia, mostly in Northern BC. These are located in the Cassiar, Cry
and Dease Lake, Mount Ogden, and other areas, as well as in
Southern British Columbia and in Yukon.
Canadian jade mining site
Canadian jade consists of individual blocks, boulder fields,
and in situ occurrences. Nephrite often occur at or
near the contacts of ultramafic/mafic rocks (mainly
serpentinites) with cherts, and other metasedimentary or
igneous felsic rocks of oceanic terranes such. It
is believed that the British Columbia nephrite formed by
metasomatic exchange between ultramafic and silicabearing
rocks. Impurities in the Canada nephrite are spinel group
minerals (chromite, magnetite, picolite), diopside,
uvarovite, titanite, chlorite and talc.
Jade is the "toughest natural stone on earth". Therefore unearthing jade boulders is the simplest mine method. Jade boulders are often evaluated by drilling or sawing before shipping.
First Nations peoples at the northwest coast of British Columbia has long history of using jade. Nephrite was used extensively by native peoples as early as 3000 years ago. Jade artefacts are located throughout the territories associated with the Dorset culture. The Tlingit made tools and ceremonial objects of nephrite jade and Inuit hunters carried jade talismans to bring good fortune. Tougher than steel, nephrite jade requires long hours of carving and polishing.
Currently majority of Canada jade rough stones are
exported to China, small amount to New Zealand and Taiwan.
Canadian green jade rough stone