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Vishnevite
Vishnevite

Sillimanite
Sillimanite



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Vishnevite
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Sillimanite

Vishnevite and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
Uneven
Perfect
5-6
-
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Vishnevite and Sillimanite Chemical Formula

While comparing Vishnevite and Sillimanite 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 Vishnevite and Sillimanite chemical formula.

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Vishnevite and Sillimanite Specific Gravity

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