Cinnabar and Cuprite Physical Properties

Cinnabar

Cuprite

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Physical Properties

Tenacity

Slightly sectile

Brittle

Solubility

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

Durability

Specific Gravity

25.85-6.15

1 7.18

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Fracture

Uneven

Conchoidal

Cleavage

Prismatic {10 1 0}, perfect

Fair in four directions forming octahedrons

Mohs Hardness

2-2.53.5-4

2 10

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Chemical Composition

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

Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cinnabar and Cuprite Chemical Formula

While comparing Cinnabar and Cuprite 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 Cuprite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cinnabar and Cuprite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Cuprite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 5.85-6.15 whereas that of Cuprite is 5.85-6.15.