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Black Opal
Black Opal

Allanite
Allanite



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Black Opal
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Allanite

Black Opal and Allanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.97-2.22
Conchoidal
None
6-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.
 
-
-
-
3.40-4.20
-
Indistinct
-9999
Ca(Ce,La,Y,Ca)Al2(Fe,Al)Si3O12(OH)

Black Opal and Allanite Chemical Formula

While comparing Black Opal and Allanite 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 Black Opal and Allanite chemical formula.

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Black Opal and Allanite Specific Gravity

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