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Poudretteite
Poudretteite

Kyanite
Kyanite



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Poudretteite
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Kyanite

Poudretteite and Kyanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.51-2.53
Conchoidal, Splintery
None
5
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5

Poudretteite and Kyanite Chemical Formula

While comparing Poudretteite 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 Poudretteite and Kyanite chemical formula.

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Poudretteite and Kyanite Specific Gravity

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