Tanzanite and Chromite Physical Properties

Tanzanite

Chromite

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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

3.354.5-4.8

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

Perfect {010}, imperfect {100}

None, parting may develop along {111}

1.7 Mohs Hardness

6.5-75.5

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Fe++Cr2O4

Tanzanite and Chromite Chemical Formula

While comparing Tanzanite and Chromite 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 Chromite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Chromite- Fe++Cr2O4

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Tanzanite and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Chromite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 4.5-4.8 whereas that of Chromite is 4.5-4.8.