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Iolite and Hardystonite Physical Properties


Hardystonite and Iolite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.6-2.7   
3.396-3.443   

Fracture
Not Available   
Brittle, Metallic   

Cleavage
3,1   
[001] good, [100] and [110] fair   

Mohs Hardness
7-7.5   
3-4   

Chemical Composition
Mg2Al4Si5O18   
Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)   

Optical Properties >>
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Iolite and Hardystonite Chemical Formula

While comparing Iolite 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 Iolite and Hardystonite chemical formula.

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Iolite and Hardystonite Specific Gravity

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

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