Difference between revisions of "Jadeite"
From The Gemology Project
Nick Lombard (talk | contribs) (Added Enhancements) |
Nick Lombard (talk | contribs) (→Enhancements) |
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* Staining - color improvement through dyes | * Staining - color improvement through dyes | ||
* Bleaching - removes stains | * Bleaching - removes stains | ||
− | * Polymer impregnation - improves luster and | + | * Polymer impregnation - improves luster and to stabilize piece after bleaching |
Revision as of 13:57, 21 December 2007
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 |
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