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Ruby and Kyanite Physical Properties


Kyanite and Ruby Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.97-4.05   
3.53-3.65   

Fracture
Conchoidal   
Splintery, Brittle, Metallic   

Cleavage
No true cleavage   
[100] perfect [010] imperfect with 79° angle between   

Mohs Hardness
9   
4-7   

Chemical Composition
Al 2 O 3   
Not Available   

Optical Properties >>
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Ruby and Kyanite Chemical Formula

While comparing Ruby 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 Ruby and Kyanite chemical formula.

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Ruby and Kyanite Specific Gravity

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

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