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Pearl and Sillimanite Physical Properties


Sillimanite and Pearl Physical Properties


Physical Properties

Tenacity
Not Available   
Tough   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.60-2.85   
3.20-3.26   

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

Cleavage
none   
{010} perfect   

Mohs Hardness
2.5-4.5   
6-7.5   

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

Optical Properties >>
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Pearl and Sillimanite Chemical Formula

While comparing Pearl and Sillimanite 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 Pearl and Sillimanite chemical formula.

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Pearl and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pearl and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pearl and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Pearl is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.

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