Peridot and Shigaite Physical Properties

Peridot

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

1.54-1.552.32

1 7.18

1.5 Fracture

Conchoidal

Flexible Flexible fragments.

1.6 Cleavage

Poor

Perfect on {0001}

1.7 Mohs Hardness

6.5-72

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

Not Available

Peridot and Shigaite Chemical Formula

While comparing Peridot 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 Peridot and Shigaite chemical formula.

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

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Peridot and Shigaite Specific Gravity

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