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Sillimanite
Sillimanite

Petoskey Stone
Petoskey Stone



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Sillimanite
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Petoskey Stone

Sillimanite and Petoskey Stone 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)
 
-
-
-
-9999
-
None
7
CaCO3

Sillimanite and Petoskey Stone Chemical Formula

While comparing Sillimanite and Petoskey Stone 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 Petoskey Stone chemical formula.

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Sillimanite and Petoskey Stone Specific Gravity

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