Gahnite and Shigaite Physical Properties

Gahnite

Shigaite

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1 Physical Properties

1.1 Tenacity

Not Available

Moderately ﬂexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.622.32

1 7.18

1.5 Fracture

Conchoidal, Uneven

Flexible Flexible fragments.

1.6 Cleavage

Indistinct parting on [111]

Perfect on {0001}

1.7 Mohs Hardness

7.5-82

2 10

1.8 Chemical Composition

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

Not Available

Gahnite and Shigaite Chemical Formula

While comparing Gahnite and Shigaite 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 Shigaite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Gahnite and Shigaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Shigaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Shigaite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 2.32 whereas that of Shigaite is 2.32.