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Onyx
Onyx

Moldavite
Moldavite



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Onyx
X
Moldavite

Onyx and Moldavite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.70
-
Indiscernible
6.5-7
SiO2
 
-
-
-
2.32-2.38
ConchoidalWalter Schumann
None
5.5
SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

Onyx and Moldavite Chemical Formula

While comparing Onyx and Moldavite 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 Onyx and Moldavite chemical formula.

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Onyx and Moldavite Specific Gravity

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