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Star Sapphire and Kyanite Physical Properties


Kyanite and Star Sapphire Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.90-4.05   
3.53-3.65   

Fracture
Not Available   
Splintery, Brittle, Metallic   

Cleavage
Not Available   
[100] perfect [010] imperfect with 79° angle between   

Mohs Hardness
Not Available   
4-7   

Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.   
Not Available   

Optical Properties >>
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Star Sapphire and Kyanite Chemical Formula

While comparing Star Sapphire and Kyanite 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 Star Sapphire and Kyanite chemical formula.

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Star Sapphire and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.

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