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Opal
Opal

Golden Beryl
Golden Beryl



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O
 
-
-
-
2.6-2.8
-
3,1 basal
7.5-8.0
Be3Al2SiO6