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Topaz
Topaz
☒

Fayalite
Fayalite
☒



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Topaz
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Fayalite

Topaz and Fayalite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.49-3.57
Subconchoidal, Uneven, Conchoidal
[001] Perfect
8
Al2SiO4(F,OH)2
 
-
-
-
4.392
Conchoidal
{010} moderate, {100} imperfect
6.5-7
Fe 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Topaz and Fayalite Chemical Formula

While comparing Topaz 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 Topaz and Fayalite chemical formula.

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Topaz and Fayalite Specific Gravity

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