Moldavite and Tanzanite Physical Properties

Moldavite

Tanzanite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

2.32-2.38

3.35

1.5 Fracture

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Not Available

Perfect {010}, imperfect {100}

1.7 Mohs Hardness

5.5

6.5-7

1.8 Chemical Composition

SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

Ca₂Al₃(SiO₄)₃(OH)

Moldavite and Tanzanite Chemical Formula

While comparing Moldavite and Tanzanite 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 Moldavite and Tanzanite chemical formula.

Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)
Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)

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Moldavite and Tanzanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moldavite and Tanzanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moldavite and Tanzanite Optical Properties during the identification of gemstone. Specific gravity of Moldavite is 3.35 whereas that of Tanzanite is 3.35.