Zoisite and Cinnabar Physical Properties

Zoisite

Cinnabar

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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

3.20-3.502

1 7.18

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Fracture

Uneven, Conchoidal, Even

Uneven

Cleavage

Perfect {010} imperfect {100}

Prismatic {10 1 0}, perfect

Mohs Hardness

6-72-2.5

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Zoisite and Cinnabar Chemical Formula

While comparing Zoisite and Cinnabar 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 Cinnabar chemical formula.

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

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Zoisite and Cinnabar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 2 whereas that of Cinnabar is 2.