Peridot and Apophyllite Physical Properties

Peridot

Apophyllite

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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

1.54-1.552.30-2.50

1 7.18

1.5 Fracture

Conchoidal

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Poor

Perfect on (001)

1.7 Mohs Hardness

6.5-74.5-5

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Peridot and Apophyllite Chemical Formula

While comparing Peridot and Apophyllite 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 Apophyllite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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Peridot and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.