Rubellite and Cat s Eye Physical Properties

Rubellite

Cat s Eye

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.01-3.063.5-3.8

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

Not Available

1,1 ; 3,2

1.7 Mohs Hardness

7-7.58.5

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

BeAl ₂ O ₄

Rubellite and Cat s Eye Chemical Formula

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

Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Chemical formula of Cat s Eye- BeAl ₂ O ₄

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Rubellite and Cat s Eye Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Cat s Eye Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Cat s Eye Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 3.5-3.8 whereas that of Cat s Eye is 3.5-3.8.