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Fibrolite
Fibrolite
☒

Black Opal
Black Opal
☒



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Fibrolite
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Black Opal
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.14-3.25
-
Perfect
6-7
Al 2SiO 5Arthur Thomas , Gemstones (2009)
 
-
-
-
1.97-2.22
Conchoidal
None
6-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Green Gemstones

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Hemimorphite
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Hiddenite
Hiddenite
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Gaspite
Black Opal Vs Gaspite
Black Opal
Glass
Black Opal Vs Glass

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