Jasper and Sillimanite Physical Properties

Jasper

Sillimanite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.58-2.913.20-3.26

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001)

Splintery

1.6 Cleavage

Indiscernible

{010} perfect

1.7 Mohs Hardness

6.5-76-7.5

2 10

1.8 Chemical Composition

SiO₂

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Jasper and Sillimanite Chemical Formula

While comparing Jasper 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 Jasper and Sillimanite chemical formula.

Chemical formula of Jasper- SiO₂
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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Jasper and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jasper and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jasper and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Jasper is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.