Cinnabar and Zoisite Physical Properties

Cinnabar

Zoisite

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Physical Properties

Tenacity

Slightly sectile

Solubility

1.04 x 10⁻²⁵ g per 100 ml water (Ksp at 25°C = 2 x 10⁻³²)

Durability

Specific Gravity

23.20-3.50

1 7.18

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Fracture

Uneven

Uneven, Conchoidal, Even

Cleavage

Prismatic {10 1 0}, perfect

Perfect {010} imperfect {100}

Mohs Hardness

2-2.56-7

2 10

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Chemical Composition

HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Ca₂Al₃(SiO₄)₃(OH)

Cinnabar and Zoisite Chemical Formula

While comparing Cinnabar 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 Cinnabar and Zoisite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)

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Cinnabar and Zoisite Specific Gravity

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