Difference between revisions of "Jadeite"

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(Enhancements)
(Addition from Robert Biehl (id:432))
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{{jadeite}}
 
{{jadeite}}
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Jadeite is made up of interlocking pyroxene crystals. It occurs in a vary wide range of colors like green, lilac, white, pink, brown, red, blue, black, orange and yellow. The most prized color is a rich emerald green and is called Imperial Jade. Its green color is due to its chromium content and can be distinguished with a Chelsea (jadeite) filter. Jadeite is believed to prevent/cure hip and kidney ailments.
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==Enhancements==
 
==Enhancements==
  
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* Bleaching - removes stains  
 
* Bleaching - removes stains  
 
* Polymer impregnation - improves luster and to stabilize piece after bleaching
 
* Polymer impregnation - improves luster and to stabilize piece after bleaching
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==Occurrence==
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The most important source of jadeite is Myanmar but Guatemala, Japan and the USA (California) are also important sources
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==Sources consulted==
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*Smithsonian Handbooks, Gemstones, Second Edition 2002

Revision as of 05:34, 5 December 2008

Jadeite
Chemical composition NaAl(SiO3)2
Crystal system Monoclinic
Habit Polycrystalline
Fracture Flintery
Hardness 6.5 -7
Specific gravity 3.30 - 3.37
Lustre Greasy to vitreous

Jadeite is made up of interlocking pyroxene crystals. It occurs in a vary wide range of colors like green, lilac, white, pink, brown, red, blue, black, orange and yellow. The most prized color is a rich emerald green and is called Imperial Jade. Its green color is due to its chromium content and can be distinguished with a Chelsea (jadeite) filter. Jadeite is believed to prevent/cure hip and kidney ailments.

Enhancements

Common enhancements to jadeite:

  • Fracture filling - wax - conceal cracks and fractures
  • Coatings - wax - to improve luster
  • Staining - color improvement through dyes
  • Bleaching - removes stains
  • Polymer impregnation - improves luster and to stabilize piece after bleaching

Occurrence

The most important source of jadeite is Myanmar but Guatemala, Japan and the USA (California) are also important sources

Sources consulted

  • Smithsonian Handbooks, Gemstones, Second Edition 2002