Tanzanite and Weloganite Physical Properties

Tanzanite

Weloganite

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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

3.353.20-3.22

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

Perfect {010}, imperfect {100}

Perfect on pseudo {0001}

1.7 Mohs Hardness

6.5-73

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Not Available

Tanzanite and Weloganite Chemical Formula

While comparing Tanzanite and Weloganite 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 Weloganite chemical formula.

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

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Tanzanite and Weloganite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Weloganite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Weloganite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.20-3.22 whereas that of Weloganite is 3.20-3.22.