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Kyanite
Kyanite

Augelite
Augelite



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Kyanite
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Augelite

Kyanite and Augelite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5
 
-
-
-
2.70-2.75
Conchoidal
From the Greek for luster, for its pearly luster on the cleavage.
4.5-5
Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Kyanite and Augelite Chemical Formula

While comparing Kyanite and Augelite 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 Kyanite and Augelite chemical formula.

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Kyanite and Augelite Specific Gravity

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