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Sillimanite and Stolzite Physical Properties


Stolzite and Sillimanite Physical Properties


Physical Properties

Tenacity
Tough   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.20-3.26   
2   

Fracture
Splintery   
Conchoidal, Uneven, Brittle   

Cleavage
{010} perfect   
Imperfect on {001}, indistinct on {011}   

Mohs Hardness
6-7.5   
2.5-3   

Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)   
Not Available   

Optical Properties >>
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Sillimanite and Stolzite Chemical Formula

While comparing Sillimanite and Stolzite 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 Stolzite chemical formula.

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Sillimanite and Stolzite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Stolzite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Stolzite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2 whereas that of Stolzite is 2.

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