Dioptase and Cinnabar Physical Properties

Dioptase

Cinnabar

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Physical Properties

Tenacity

Brittle

Slightly sectile

Solubility

Soluble

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

Durability

Specific Gravity

3.25-3.352

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Uneven

Cleavage

Perfect in three directions

Prismatic {10 1 0}, perfect

Mohs Hardness

52-2.5

2 10

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Chemical Composition

CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Dioptase and Cinnabar Chemical Formula

While comparing Dioptase 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 Dioptase and Cinnabar chemical formula.

Chemical formula of Dioptase- CuSiO 2(OH) 2Michael 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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Dioptase and Cinnabar Specific Gravity

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