Peridot and Iolite Physical Properties

Peridot

Iolite

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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

1.54-1.552.6-2.7

1 7.18

1.5 Fracture

Conchoidal

Not Available

1.6 Cleavage

Poor

3,1

1.7 Mohs Hardness

6.5-77-7.5

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

Mg₂Al₄Si₅O₁₈

Peridot and Iolite Chemical Formula

While comparing Peridot and Iolite 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 Iolite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Peridot and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Iolite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 2.6-2.7 whereas that of Iolite is 2.6-2.7.