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Petoskey Stone
Petoskey Stone

Sillimanite
Sillimanite



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Petoskey Stone
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Sillimanite

Petoskey Stone and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
None
7
CaCO3
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Petoskey Stone and Sillimanite Chemical Formula

While comparing Petoskey Stone 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 Petoskey Stone and Sillimanite chemical formula.

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Petoskey Stone and Sillimanite Specific Gravity

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