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Jet
Jet

Gahnite
Gahnite



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Jet
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Gahnite

Jet and Gahnite Physical Properties

Jet
Jet
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.19-1.35
ConchoidalWalter Schumann
None
2.5-4
C
 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Jet and Gahnite Chemical Formula

While comparing Jet and Gahnite 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 Jet and Gahnite chemical formula.

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Jet and Gahnite Specific Gravity

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