Peridot and Colemanite Physical Properties

Peridot

Colemanite

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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

1.54-1.552.40-2.42

1 7.18

1.5 Fracture

Conchoidal

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

Poor

{010} Perfect, {001} Distinct

1.7 Mohs Hardness

6.5-74.5

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Peridot and Colemanite Chemical Formula

While comparing Peridot and Colemanite 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 Colemanite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Peridot and Colemanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Colemanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Colemanite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 2.40-2.42 whereas that of Colemanite is 2.40-2.42.