Zoisite and Topazolite Physical Properties

Zoisite

Topazolite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.503.70-4.10

1 7.18

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Fracture

Uneven, Conchoidal, Even

Conchoidal

Cleavage

Perfect {010} imperfect {100}

Indistinct

Mohs Hardness

6-76.5-7

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Zoisite and Topazolite Chemical Formula

While comparing Zoisite 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 Zoisite and Topazolite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Topazolite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Zoisite and Topazolite Specific Gravity

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