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Prase Opal
Prase Opal

Sillimanite
Sillimanite



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Prase Opal
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Sillimanite

Prase Opal and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.25
Conchoidal
None
5-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Prase Opal and Sillimanite Chemical Formula

While comparing Prase Opal 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 Prase Opal and Sillimanite chemical formula.

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Prase Opal and Sillimanite Specific Gravity

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