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Augelite
Augelite

Black Opal
Black Opal



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Augelite
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Black Opal

Augelite and Black Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.70-2.75
Conchoidal
From the Greek for luster, for its pearly luster on the cleavage.
4.5-5
Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
1.97-2.22
Conchoidal
None
6-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.

Augelite and Black Opal Chemical Formula

While comparing Augelite and Black Opal physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Augelite and Black Opal chemical formula.

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Augelite and Black Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augelite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augelite Vs Black Opal during the identification of gemstone. Specific gravity of Augelite is whereas that of Black Opal is .