Tanzanite and Anorthite Physical Properties

Tanzanite

Anorthite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.35

2.77

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect {010}, imperfect {100}

Perfect [001] good [010] poor [110]

1.7 Mohs Hardness

6.5-7

6-6.5

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Tanzanite and Anorthite Chemical Formula

While comparing Tanzanite and Anorthite 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 Anorthite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Tanzanite and Anorthite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Anorthite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Anorthite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.77 whereas that of Anorthite is 2.77.