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Sillimanite
Sillimanite

Benitoite
Benitoite



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Sillimanite
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Benitoite

Sillimanite and Benitoite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
Insoluble: HCl
-
3.61-3.68
Conchoidal
[10 1 1] poor
6-6.5
BaTiSi 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Sillimanite and Benitoite Chemical Formula

While comparing Sillimanite and Benitoite 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 Sillimanite and Benitoite chemical formula.

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Sillimanite and Benitoite Specific Gravity

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