Kyanite and Malachite Physical Properties

Kyanite

Malachite

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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

3.53-3.65

3.25-4.10

1.5 Fracture

Splintery, Brittle, Metallic

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

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

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

4-7

3.5-4

1.8 Chemical Composition

Not Available

Cu₂CO₃(OH)₂

Kyanite and Malachite Chemical Formula

While comparing Kyanite and Malachite 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 Malachite chemical formula.

Chemical formula of Malachite- Cu₂CO₃(OH)₂

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Kyanite and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Malachite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.25-4.10 whereas that of Malachite is 3.25-4.10.