Cinnabar and Willemite Physical Properties

Cinnabar

Willemite

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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

23.89-4.18

1 7.18

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Fracture

Uneven

Conchoidal, Uneven

Cleavage

Prismatic {10 1 0}, perfect

{0001}, {11 2 0} imperfect

Mohs Hardness

2-2.55.5

2 10

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Chemical Composition

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

Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cinnabar and Willemite Chemical Formula

While comparing Cinnabar and Willemite 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 Willemite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Red Gemstones

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Cinnabar and Willemite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Willemite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Willemite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.89-4.18 whereas that of Willemite is 3.89-4.18.