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Kyanite
Kyanite

Boracite
Boracite



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Kyanite
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Boracite

Kyanite and Boracite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5
 
Brittle
Soluble
-
2.95-2.96
Conchoidal
None
7-7.5
Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Boracite Chemical Formula

While comparing Kyanite and Boracite 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 Boracite chemical formula.

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Kyanite and Boracite Specific Gravity

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