Zoisite and Tourmaline Physical Properties

Zoisite

Tourmaline

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.502.85-3.35

1 7.18

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Fracture

Uneven, Conchoidal, Even

Uneven, Conchoidal

Cleavage

Perfect {010} imperfect {100}

Indistinct

Mohs Hardness

6-77-7.5

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

Zoisite and Tourmaline Chemical Formula

While comparing Zoisite and Tourmaline 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 Tourmaline chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

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Zoisite and Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.