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Gahnite
Gahnite

Andradite
Andradite



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Gahnite
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Andradite

Gahnite and Andradite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Gahnite and Andradite Chemical Formula

While comparing Gahnite and Andradite 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 Andradite chemical formula.

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Gahnite and Andradite Specific Gravity

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