Cat s Eye and Sillimanite Physical Properties

Cat s Eye

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

3.5-3.83.20-3.26

1 7.18

1.5 Fracture

Not Available

Splintery

1.6 Cleavage

1,1 ; 3,2

{010} perfect

1.7 Mohs Hardness

8.56-7.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

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

Cat s Eye and Sillimanite Chemical Formula

While comparing Cat s Eye 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 Cat s Eye and Sillimanite chemical formula.

Chemical formula of Cat s Eye- BeAl ₂ O ₄
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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Cat s Eye and Sillimanite Specific Gravity

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