Tanzanite and Dravite Physical Properties

Tanzanite

Dravite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Hard

3.35

Uneven, Conchoidal

Perfect {010}, imperfect {100}

6.5-7

Ca₂Al₃(SiO₄)₃(OH)

3.03-3.18

Uneven, Irregular, Conchoidal

{???} Indistinct

7-7.5

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Tanzanite and Dravite Chemical Formula

While comparing Tanzanite and Dravite 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 Dravite chemical formula.

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Tanzanite and Dravite Specific Gravity

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