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Sugilite and Kyanite Physical Properties


Kyanite and Sugilite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.69-2.79   
3.53-3.65   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
Splintery, Brittle, Metallic   

Cleavage
Poor on {0001}   
[100] perfect [010] imperfect with 79° angle between   

Mohs Hardness
5.5-6.5   
4-7   

Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
Not Available   

Optical Properties >>
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Sugilite and Kyanite Chemical Formula

While comparing Sugilite 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 Sugilite and Kyanite chemical formula.

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Sugilite and Kyanite Specific Gravity

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

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