Kyanite and Chlorastrolite Physical Properties

Kyanite

Chlorastrolite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.653.1-3.5

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Granular

1.6 Cleavage

[100] perfect [010] imperfect with 79° angle between

Not Available

1.7 Mohs Hardness

4-75-6

2 10

1.8 Chemical Composition

Not Available

Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)

Kyanite and Chlorastrolite Chemical Formula

While comparing Kyanite and Chlorastrolite 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 Kyanite and Chlorastrolite chemical formula.

Chemical formula of Chlorastrolite- Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)

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Kyanite and Chlorastrolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Chlorastrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Chlorastrolite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.1-3.5 whereas that of Chlorastrolite is 3.1-3.5.