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Gahnite
Gahnite

Topaz
Topaz



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Gahnite
X
Topaz

Gahnite and Topaz Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
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4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)
 
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-
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3.49-3.57
Subconchoidal, Uneven, Conchoidal
[001] Perfect
8
Al2SiO4(F,OH)2

Gahnite and Topaz Chemical Formula

While comparing Gahnite and Topaz 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 Gahnite and Topaz chemical formula.

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Gahnite and Topaz Specific Gravity

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