Sutcliffe said:
If jade is fibrous would it cause something similar to asbestosis if allowed to get into the lungs of those working it?
http://www.ganoksin.com/borisat/nenam/dust.htm
"Lapidary workers have to be very careful of dusts they produce, particularly in production situations.
There are clear cases of Jade workers getting silicosis in as little as 5 - 10 years. "
Unclear if the two types of real jade are equally hazardous........
http://www.jadesite.com/physical.html
"Pure Jade is pure white. All variations are due to the presence of several metals in the crystalline structure. .........
There are two types of Jade: It consists of two separate silicate mineral species, ........
Nephrite: Found in modest Quantities around China in ancient times. ........ Also known as "Old Jade" to Chinese collectors............
Jadeite: Known as "New Jade"...............
The toughness of Jade is its defining mineralogical physical property. "
http://www.islandnet.com/~vlms/shoptips.html
"Jade: Lapidaries and jewelers should constantly attempt to call gemstones and rough material by their correct name. Jade has many other stones named after it, as any material. The confusion as to what jade is, has been compounded by this deceptive practice.
Amazon jade is adventurine..
American jade is a rock - a mixture of idocrase and grossular.
Australian jade is chrysophrase.
Colorado jade is green microcline.
Flukien, Manchurian, and Honan jade are all soapstone.
Indian jade is adventurine.
Jadite is pure jade. (editor's note ? - not sure what he means)
Jasper jade is green jasper.
Korean jade is bowenite, a hard variety of serpentine. (Mexican jade is green dyed marble or calcite.
Oregon jade is a dark green jasper.
Silver Peak jade is malachite.
Transvall jade is a massive variety of green grossular garnet.
Real jade such as BC jade, Alaska or Yukon jade are truly nephrite jade:
Nephrite Hardness 6-61/2 S.G. 2.95 R.I. 1.6 -1.63
Jadeite Hardness 61/2-7 S.G. 3.3 R.I. 1.66 - 1.68"
http://www.ganoksin.com/server-cgi-.../ganoksin/borisat/searchftr.htm&QUERY=jadeite
http://www.ganoksin.com/server-cgi-...ganoksin/borisat/searchftr.htm&QUERY=nephrite
Bunch of articles.
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