Cinnabar and Coral Physical Properties

Cinnabar

Coral

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1 Physical Properties

1.1 Tenacity

Slightly sectile

Not Available

1.2 Solubility

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

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

22.60-2.70

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Irregular, Irregular, Gemstones of the world (2001)

1.6 Cleavage

Prismatic {10 1 0}, perfect

Not Available

1.7 Mohs Hardness

2-2.53-4

2 10

1.8 Chemical Composition

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

CaCO 3Ulrich Henn and Claudio C.

Cinnabar and Coral Chemical Formula

While comparing Cinnabar and Coral 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 Coral chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.

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Cinnabar and Coral Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Coral Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Coral Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.60-2.70 whereas that of Coral is 2.60-2.70.