Peridot and Gahnite Physical Properties

Peridot

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

1.54-1.554.00-4.62

1 7.18

1.5 Fracture

Conchoidal

Conchoidal, Uneven

1.6 Cleavage

Poor

Indistinct parting on [111]

1.7 Mohs Hardness

6.5-77.5-8

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

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

Peridot and Gahnite Chemical Formula

While comparing Peridot 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 Peridot and Gahnite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Peridot and Gahnite Specific Gravity

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