Zoisite and Demantoid Physical Properties

Zoisite

Demantoid

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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

3.20-3.503.77-3.95

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Perfect {010} imperfect {100}

Not Available

1.7 Mohs Hardness

6-76.5

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Zoisite and Demantoid Chemical Formula

While comparing Zoisite and Demantoid 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 Demantoid chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

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Zoisite and Demantoid Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Demantoid Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Demantoid Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 3.77-3.95 whereas that of Demantoid is 3.77-3.95.