Tanzanite and Malachite Physical Properties

Tanzanite

Malachite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.35

3.25-4.10

1.5 Fracture

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

Perfect {010}, imperfect {100}

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

6.5-7

3.5-4

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Cu₂CO₃(OH)₂

Tanzanite and Malachite Chemical Formula

While comparing Tanzanite 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 Tanzanite and Malachite chemical formula.

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

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Tanzanite and Malachite Specific Gravity

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