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Spinel
Spinel

Gahnite
Gahnite



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Spinel
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Gahnite

Spinel and Gahnite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.64-3.66
Conchoidal, Uneven
None, but may exhibit slight parting
8
MgAl2O4
 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Spinel and Gahnite Chemical Formula

While comparing Spinel 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 Spinel and Gahnite chemical formula.

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Spinel and Gahnite Specific Gravity

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