Peridot and Phlogopite Physical Properties

Peridot

Phlogopite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.54-1.552.78-2.85

1 7.18

1.5 Fracture

Conchoidal

None, Uneven

1.6 Cleavage

Poor

Perfect basal (001)

1.7 Mohs Hardness

6.5-72-2.5

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

Not Available

Peridot and Phlogopite Chemical Formula

While comparing Peridot and Phlogopite 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 Phlogopite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄

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Peridot and Phlogopite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Phlogopite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Phlogopite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 2.78-2.85 whereas that of Phlogopite is 2.78-2.85.