Tanzanite and Allanite Physical Properties

Tanzanite

Allanite

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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

3.353.40-4.20

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Perfect {010}, imperfect {100}

Not Available

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Not Available

Tanzanite and Allanite Chemical Formula

While comparing Tanzanite and Allanite 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 Allanite chemical formula.

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

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Tanzanite and Allanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Allanite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.40-4.20 whereas that of Allanite is 3.40-4.20.