Tanzanite and Lazulite Physical Properties

Tanzanite

Lazulite

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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

3.35

3.04-3.17

1.5 Fracture

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

Uneven, Uneven, Gemstones of the world (2001) More from other references

1.6 Cleavage

Perfect {010}, imperfect {100}

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

6.5-7

5.5

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Tanzanite and Lazulite Chemical Formula

While comparing Tanzanite and Lazulite 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 Lazulite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Tanzanite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.