Cinnabar and Covellite Physical Properties

Cinnabar

Covellite

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Physical Properties

Tenacity

Slightly sectile

Flexible

Solubility

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

Durability

Specific Gravity

24.6-4.76

1 7.18

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Fracture

Uneven

Cleavage

Prismatic {10 1 0}, perfect

Perfect on {0001}

Mohs Hardness

2-2.5-9999

2 10

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Chemical Composition

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

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Cinnabar and Covellite Chemical Formula

While comparing Cinnabar and Covellite 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 Covellite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Cinnabar and Covellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Covellite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 4.6-4.76 whereas that of Covellite is 4.6-4.76.