玉   Beautiful World of Jade     


 

Cochise College Student Papers on Geology
Paper on Jade by George Soong

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            Jade, a semi-precious gemstone, is actually made up of two completely different minerals.  These are nephrite and jadeite.  Chloromelanite is an iron-rich variety of jadeite with dark green to black color and is classified as jadeite because it belongs in the same mineral group.  Nephrite is more common than jadeite, which means nephrite is less expensive than jadeite.  Jadeite is more expensive because it's colors are much more vivid colors and finer translucency than nephrite.   

            Nephrite can be found in Taiwan, Australia, Russia, Myanmar (formally Burma), China and Wyoming.  Nephrite is not as colorful as Jadeite.  It comes in shades of green, gray, bluish gray and grayish white.  Ancient Chinese carvings, is usually carved out Nephrite.  Chinese calls it "Old Jade."

Jade horse carved from Nephrite

            Jadeite can be found in California, Myanmar, Alaska, Japan and small amounts in Guatemala.  Jadeite have colors of shades of green, lilac, blue, pink, white, yellow, black, and a unique black with natural precious metal included.  Jadeite, because of it's better color and better quality is consider to be the "real jade."  Chinese calls it "New Jade." 

     

    Purple Jadeite   

Fish carved from jade

 

Produced by George S.

2003 - 2008

 

Links to more information on Jade

http://math.cochise.cc.az.us/People/faculty/wellerr/translucent.html

http://www.npm.gov.tw/exhbition/cjad2000/english/ejad2000.htm

http://www.jewelrycentral.com/Target_Jade.html

http://masterwiresculptor.com/jade.htm

http://www.ulian.com/about_Chinese_Jade.html

http://www.jadesite.com/index2.html