Gahnite and Lazulite Physical Properties

Gahnite

Lazulite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.623.04-3.17

1 7.18

1.5 Fracture

Conchoidal, Uneven

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

1.6 Cleavage

Indistinct parting on [111]

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

7.5-85.5

2 10

1.8 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Gahnite and Lazulite Chemical Formula

While comparing Gahnite 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 Gahnite and Lazulite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Gahnite and Lazulite Specific Gravity

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