Tanzanite and Sodalite Physical Properties

Tanzanite

Sodalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.35

2.15-2.40

1.5 Fracture

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

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

Perfect {010}, imperfect {100}

Poor on {110}

1.7 Mohs Hardness

6.5-7

5-6

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Na₈Al₆Si₆O₂₄Cl₂

Tanzanite and Sodalite Chemical Formula

While comparing Tanzanite and Sodalite 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 Sodalite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂

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Tanzanite and Sodalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Sodalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Sodalite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.15-2.40 whereas that of Sodalite is 2.15-2.40.