Pezzottaite and Gahnite Physical Properties

Pezzottaite

Gahnite

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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

2.90-3.144.00-4.62

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

Imperfect; basal

Indistinct parting on [111]

1.7 Mohs Hardness

7.5-87.5-8

2 10

1.8 Chemical Composition

(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

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

Pezzottaite and Gahnite Chemical Formula

While comparing Pezzottaite 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 Pezzottaite and Gahnite chemical formula.

Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Pezzottaite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pezzottaite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pezzottaite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Pezzottaite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.