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Kyanite and Hercynite Physical Properties


Hercynite and Kyanite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.53-3.65   
4.39   

Fracture
Splintery, Brittle, Metallic   
ConchoidalGemdat.org, Uneven   

Cleavage
[100] perfect [010] imperfect with 79° angle between   
{111} Indistinct, {111} Indistinct, {111} Indistinct   

Mohs Hardness
4-7   
7.5-8   

Chemical Composition
Not Available   
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)   

Optical Properties >>
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Kyanite and Hercynite Chemical Formula

While comparing Kyanite and Hercynite 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 Kyanite and Hercynite chemical formula.

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Kyanite and Hercynite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Hercynite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Hercynite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 4.39 whereas that of Hercynite is 4.39.

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