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Gahnite
Gahnite

Cordierite
Cordierite



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Gahnite
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Cordierite

Gahnite and Cordierite Physical Properties

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
-
-
2.57-2.66
Subconchoidal, Conchoidal
Fair on {100}, poor on {001} and {010}
7-7.5
Mg2Al4Si5O18

Gahnite and Cordierite Chemical Formula

While comparing Gahnite and Cordierite 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 Cordierite chemical formula.

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Gahnite and Cordierite Specific Gravity

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