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Black Opal
Black Opal

Uvarovite
Uvarovite



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Black Opal
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Uvarovite

Black Opal and Uvarovite 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.
 
-
-
-
3.77
Uneven, Conchoidal
None
6.5-7.5
Ca 3Cr 2(SiO 4) 3Ulrich Henn and Claudio C.

Black Opal and Uvarovite Chemical Formula

While comparing Black Opal and Uvarovite 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 Uvarovite chemical formula.

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Black Opal and Uvarovite Specific Gravity

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