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Iolite
Iolite

Faustite
Faustite



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Iolite
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Faustite

Iolite and Faustite 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
 
-
-
-
2.9
Conchoidal
{???} Indistinct
4.5
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Iolite and Faustite Chemical Formula

While comparing Iolite and Faustite 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 Faustite chemical formula.

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Iolite and Faustite Specific Gravity

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