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Dumortierite
Dumortierite

Bertrandite
Bertrandite



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Dumortierite
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Bertrandite

Dumortierite and Bertrandite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
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3.26-3.41
Fibrous, ConchoidalWalter Schumann
Distinct on {100}, poor on {110}; parting on {001}
7-8.5
AlAl6O3BSi3O18
 
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2.59-2.60
-
{001} Perfect, {110} Distinct, {101} Distinct
6-7
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Dumortierite and Bertrandite Chemical Formula

While comparing Dumortierite and Bertrandite 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 Dumortierite and Bertrandite chemical formula.

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Dumortierite and Bertrandite Specific Gravity

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