Cuprite and Cinnabar Physical Properties

Cuprite

Cinnabar

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Physical Properties

Tenacity

Brittle

Slightly sectile

Solubility

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

Durability

Specific Gravity

5.85-6.152

1 7.18

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Fracture

Conchoidal

Uneven

Cleavage

Fair in four directions forming octahedrons

Prismatic {10 1 0}, perfect

Mohs Hardness

3.5-42-2.5

2 10

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Chemical Composition

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

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

Cuprite and Cinnabar Chemical Formula

While comparing Cuprite 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 Cuprite and Cinnabar chemical formula.

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

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Cuprite Vs Manganotantalite

Cuprite and Cinnabar Specific Gravity

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