Cinnabar and Dioptase Physical Properties

Cinnabar

Dioptase

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1 Physical Properties

1.1 Tenacity

Slightly sectile

Brittle

1.2 Solubility

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

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

23.25-3.35

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

Prismatic {10 1 0}, perfect

Perfect in three directions

1.7 Mohs Hardness

2-2.55

2 10

1.8 Chemical Composition

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

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

Cinnabar and Dioptase Chemical Formula

While comparing Cinnabar and Dioptase 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 Dioptase chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Dioptase- CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cinnabar and Dioptase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Dioptase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Dioptase Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.25-3.35 whereas that of Dioptase is 3.25-3.35.