Iolite and Topazolite Physical Properties

Iolite

Topazolite

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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

2.6-2.73.70-4.10

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

3,1

Not Available

1.7 Mohs Hardness

7-7.56.5-7

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Iolite and Topazolite Chemical Formula

While comparing Iolite and Topazolite 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 Iolite and Topazolite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Topazolite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Iolite and Topazolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Topazolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Topazolite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.70-4.10 whereas that of Topazolite is 3.70-4.10.