Peridot and Annabergite Physical Properties

Peridot

Annabergite

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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

1.54-1.553.07

1 7.18

1.5 Fracture

Conchoidal

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

Poor

Perfect on {010}, indistinct on {100} and {102}

1.7 Mohs Hardness

6.5-72

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

Ni3(AsO4)2•8(H2O)

Peridot and Annabergite Chemical Formula

While comparing Peridot and Annabergite 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 Annabergite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)

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Peridot and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 3.07 whereas that of Annabergite is 3.07.