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Selenite
Selenite

Fayalite
Fayalite



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Selenite
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Fayalite

Selenite and Fayalite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
Perfect
2
CaSO4·2H2O
 
-
-
-
4.392
Conchoidal
{010} moderate, {100} imperfect
6.5-7
Fe 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Selenite and Fayalite Chemical Formula

While comparing Selenite and Fayalite 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 Selenite and Fayalite chemical formula.

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Selenite and Fayalite Specific Gravity

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