Kyanite and Hematite Physical Properties

Kyanite

Hematite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.65

5.00-5.30

1.5 Fracture

Splintery, Brittle, Metallic

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

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

None, may show partings on {0001} and {10 1 1}

1.7 Mohs Hardness

4-7

1.8 Chemical Composition

Not Available

Fe 2O 3Arthur Thomas , Gemstones (2009)

Kyanite and Hematite Chemical Formula

While comparing Kyanite and Hematite 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 Hematite chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

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Kyanite Vs Swiss blue topaz

Kyanite Vs Blue quartz

Kyanite and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.