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GEMMOLOGICAL PROPERTIES
Nephrite
Family: |
Jade |
Crystal System: |
Monoclinic |
Specific Gravity: |
2.90-3.05 |
Hardness: |
6 - 6.5 |
Refractive Index: |
1.6 - 1.63 |
Chemical Composition: |
Ca2(Mg,Fe)5Si8O22(OH)2 |
Birefringence: |
None (Usually) |
Pleochroism: |
None |
Lustre: |
Dull |
Fracture: |
Splintery to Granular |
Cleavage: |
None |
This gemmological data has been provided by an external consultant. If you notice any errors or omissions - or if you would like to offer a suggestion to improve this service - please contact: webmaster@ajtd.com.au |
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