Peridot and Bertrandite Physical Properties

Peridot

Bertrandite

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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

1.54-1.552.59-2.60

1 7.18

1.5 Fracture

Conchoidal

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

Poor

{001} Perfect, {110} Distinct, {101} Distinct

1.7 Mohs Hardness

6.5-76-7

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Peridot and Bertrandite Chemical Formula

While comparing Peridot and Bertrandite 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 Bertrandite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Peridot and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.