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Jelly Opal
Jelly Opal

Sillimanite
Sillimanite



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Jelly Opal
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Sillimanite

Jelly Opal and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO2*nH2O
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Jelly Opal and Sillimanite Chemical Formula

While comparing Jelly 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 Jelly Opal and Sillimanite chemical formula.

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Jelly Opal and Sillimanite Specific Gravity

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