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Moldavite
Moldavite

Alunite
Alunite



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Moldavite
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Alunite

Moldavite and Alunite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.32-2.38
ConchoidalWalter Schumann
None
5.5
SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Moldavite and Alunite Chemical Formula

While comparing Moldavite and Alunite 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 Moldavite and Alunite chemical formula.

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Moldavite and Alunite Specific Gravity

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