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Kyanite and Erythrite Physical Properties


Erythrite and Kyanite Physical Properties


Physical Properties

Tenacity
Brittle   
Sectile   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.53-3.65   
3.06   

Fracture
Splintery, Brittle, Metallic   
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).   

Cleavage
[100] perfect [010] imperfect with 79° angle between   
Perfect on {010}; poor on {100} and { 1 02}.   

Mohs Hardness
4-7   
Not Available   

Chemical Composition
Not Available   
Co3(AsO4)2•8(H2O)   

Optical Properties >>
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Kyanite and Erythrite Chemical Formula

While comparing Kyanite and Erythrite 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 Erythrite chemical formula.

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Kyanite and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.06 whereas that of Erythrite is 3.06.

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