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Star Sapphire
Star Sapphire

Williamsite
Williamsite



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Star Sapphire
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Williamsite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.90-4.05
-
None
-9999
Al 2O 3Ulrich Henn and Claudio C.
 
-
-
-
2.51-2.63
Conchoidal
Perfect
4
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)