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Sillimanite and Moldavite Physical Properties


Moldavite and Sillimanite Physical Properties


Physical Properties

Tenacity
Tough   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.20-3.26   
2.32-2.38   

Fracture
Splintery   
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)   

Cleavage
{010} perfect   
Not Available   

Mohs Hardness
6-7.5   
5.5   

Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)   
SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)   

Optical Properties >>
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Sillimanite and Moldavite Chemical Formula

While comparing Sillimanite and Moldavite 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 Moldavite chemical formula.

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Sillimanite and Moldavite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Moldavite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Moldavite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.32-2.38 whereas that of Moldavite is 2.32-2.38.

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