Azurite and Tanzanite Physical Properties

Azurite

Tanzanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

3.70-3.90

3.35

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

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

1.6 Cleavage

Perfect on {011}, fair on {100}, poor on {110}

Perfect {010}, imperfect {100}

1.7 Mohs Hardness

3.5-4

6.5-7

1.8 Chemical Composition

Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Ca₂Al₃(SiO₄)₃(OH)

Azurite and Tanzanite Chemical Formula

While comparing Azurite 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 Azurite and Tanzanite chemical formula.

Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)

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Azurite and Tanzanite Specific Gravity

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