Peridot and Riebeckite Physical Properties

Peridot

Riebeckite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.54-1.553.28-3.44

1 7.18

1.5 Fracture

Conchoidal

Uneven, Splintery, Brittle

1.6 Cleavage

Poor

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

1.7 Mohs Hardness

6.5-75.0-6.0

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

Not Available

Peridot and Riebeckite Chemical Formula

While comparing Peridot and Riebeckite 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 Riebeckite chemical formula.

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

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Peridot and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.