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Dumortierite and Hardystonite Physical Properties


Hardystonite and Dumortierite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.26-3.41   
3.396-3.443   

Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references   
Brittle, Metallic   

Cleavage
Distinct on {100}, poor on {110}; parting on {001}   
[001] good, [100] and [110] fair   

Mohs Hardness
7-8.5   
3-4   

Chemical Composition
AlAl6O3BSi3O18   
Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)   

Optical Properties >>
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Dumortierite and Hardystonite Chemical Formula

While comparing Dumortierite and Hardystonite 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 Hardystonite chemical formula.

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Dumortierite and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.

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