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Kyanite
Kyanite

Chrysoprase
Chrysoprase



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Kyanite
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Chrysoprase
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5
 
-
-
-
2.58-2.64
-
None
6.5-7
SiO2 (with a high level of nickel impurities )