Kyanite and Fibrolite Physical Properties

Kyanite

Fibrolite

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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

3.53-3.653.14-3.25

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

4-76-7

2 10

1.8 Chemical Composition

Not Available

Al 2SiO 5Arthur Thomas , Gemstones (2009)

Kyanite and Fibrolite Chemical Formula

While comparing Kyanite and Fibrolite 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 Fibrolite chemical formula.

Chemical formula of Fibrolite- Al 2SiO 5Arthur Thomas , Gemstones (2009)

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Kyanite and Fibrolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Fibrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Fibrolite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.14-3.25 whereas that of Fibrolite is 3.14-3.25.