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Kyanite
Kyanite

Sinhalite
Sinhalite



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Kyanite
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Sinhalite

Kyanite and Sinhalite Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.53-3.653.46-3.50
1 7.18
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Fracture

Splintery
Conchoidal

Cleavage

[100] perfect [010] imperfect with 79° angle between
Perfect

Mohs Hardness

4-76-7
2 10
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Chemical Composition

Al2SiO5
MgAlBO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Sinhalite Chemical Formula

While comparing Kyanite and Sinhalite 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 Sinhalite chemical formula.

  • Chemical formula of Kyanite- Al2SiO5
  • Chemical formula of Sinhalite- MgAlBO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Sinhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Sinhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Sinhalite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.46-3.50 whereas that of Sinhalite is 3.46-3.50.