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Iolite
Iolite

Augelite
Augelite



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Iolite
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Augelite

Iolite and Augelite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.6-2.7
-
3,1
7-7.5
Mg2Al4Si5O18
 
-
-
-
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)

Iolite and Augelite Chemical Formula

While comparing Iolite 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 Iolite and Augelite chemical formula.

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Iolite and Augelite Specific Gravity

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