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Lazulite
Lazulite

Gahnite
Gahnite



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Lazulite
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Gahnite

Lazulite and Gahnite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
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3.04-3.17
Uneven
{001} Indistinct, {???} Indistinct
5.5
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
 
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4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Lazulite and Gahnite Chemical Formula

While comparing Lazulite and Gahnite 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 Lazulite and Gahnite chemical formula.

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Lazulite and Gahnite Specific Gravity

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