Malachite and Tanzanite Physical Properties

Malachite

Tanzanite

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Physical Properties

Tenacity

Solubility

Durability

Hard

Specific Gravity

3.25-4.103.35

1 7.18

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Fracture

Conchoidal, Uneven

Uneven, Conchoidal

Cleavage

Perfect on { 2 01} fair on {010}

Perfect {010}, imperfect {100}

Mohs Hardness

3.5-46.5-7

2 10

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Chemical Composition

Cu₂CO₃(OH)₂

Ca₂Al₃(SiO₄)₃(OH)

Malachite and Tanzanite Chemical Formula

While comparing Malachite and Tanzanite 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 Malachite and Tanzanite chemical formula.

Chemical formula of Malachite- Cu₂CO₃(OH)₂
Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)

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Malachite and Tanzanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Malachite and Tanzanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Tanzanite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.35 whereas that of Tanzanite is 3.35.