Peridot and Erythrite Physical Properties

Peridot

Erythrite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.54-1.553.06

1 7.18

1.5 Fracture

Conchoidal

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

1.6 Cleavage

Poor

Perfect on {010}; poor on {100} and { 1 02}.

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

Co3(AsO4)2•8(H2O)

Peridot and Erythrite Chemical Formula

While comparing Peridot and Erythrite 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 Erythrite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

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Peridot and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 3.06 whereas that of Erythrite is 3.06.