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Emerald
Emerald

Sillimanite
Sillimanite



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Emerald
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Sillimanite

Emerald and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
Hard
2.67-2.78
Uneven, ConchoidalWalter Schumann
Imperfect on the [0001]
7.5-8
Be3Al2SiO6
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Emerald and Sillimanite Chemical Formula

While comparing Emerald 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 Emerald and Sillimanite chemical formula.

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Emerald and Sillimanite Specific Gravity

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