Colemanite and Iolite Physical Properties

Colemanite

Iolite

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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

2.40-2.422.6-2.7

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

{010} Perfect, {001} Distinct

3,1

1.7 Mohs Hardness

4.57-7.5

2 10

1.8 Chemical Composition

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

Mg₂Al₄Si₅O₁₈

Colemanite and Iolite Chemical Formula

While comparing Colemanite and Iolite 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 Colemanite and Iolite chemical formula.

Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Colemanite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Colemanite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Colemanite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Colemanite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.