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Grossular
Grossular

Sillimanite
Sillimanite



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Grossular
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Sillimanite

Grossular and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.55-3.73
Conchoidal, Uneven
none
7-7.5
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Grossular and Sillimanite Chemical Formula

While comparing Grossular 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 Grossular and Sillimanite chemical formula.

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Grossular and Sillimanite Specific Gravity

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