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Sillimanite
Sillimanite

Pyrope
Pyrope



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Sillimanite
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Pyrope

Sillimanite and Pyrope 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)
 
-
insoluble in water
-
3.62-3.87
Conchoidal
None
7-7.5
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Sillimanite and Pyrope Chemical Formula

While comparing Sillimanite and Pyrope 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 Pyrope chemical formula.

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Sillimanite and Pyrope Specific Gravity

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