Verdite and Zoisite Physical Properties

Verdite

Zoisite

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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

2.80-3.03.20-3.50

1 7.18

1.5 Fracture

Not Available

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even

1.6 Cleavage

{110} Good

Perfect {010} imperfect {100}

1.7 Mohs Hardness

36-7

2 10

1.8 Chemical Composition

NaFeS2•2(H2O)

Ca₂Al₃(SiO₄)₃(OH)

Verdite and Zoisite Chemical Formula

While comparing Verdite and Zoisite 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 Verdite and Zoisite chemical formula.

Chemical formula of Verdite- NaFeS2•2(H2O)
Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)

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Verdite and Zoisite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Verdite and Zoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Verdite and Zoisite Optical Properties during the identification of gemstone. Specific gravity of Verdite is 3.20-3.50 whereas that of Zoisite is 3.20-3.50.