Cinnabar and Gahnite Physical Properties

Cinnabar

Gahnite

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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

24.00-4.62

1 7.18

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Fracture

Uneven

Conchoidal, Uneven

Cleavage

Prismatic {10 1 0}, perfect

Indistinct parting on [111]

Mohs Hardness

2-2.57.5-8

2 10

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Chemical Composition

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

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Cinnabar and Gahnite Chemical Formula

While comparing Cinnabar and Gahnite 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 Gahnite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Cinnabar and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.