Cinnabar and Ruby Physical Properties

Cinnabar

Ruby

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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)

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

23.97-4.05

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Conchoidal

1.6 Cleavage

Prismatic {10 1 0}, perfect

No true cleavage

1.7 Mohs Hardness

2-2.59

2 10

1.8 Chemical Composition

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

Al ₂ O ₃

Cinnabar and Ruby Chemical Formula

While comparing Cinnabar and Ruby 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 Ruby chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Ruby- Al ₂ O ₃

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Cinnabar and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Ruby Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.97-4.05 whereas that of Ruby is 3.97-4.05.