Sapphire and Cinnabar Physical Properties

Sapphire

Cinnabar

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1 Physical Properties

1.1 Tenacity

Not Available

Slightly sectile

1.2 Solubility

insoluble

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

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.032

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

None, but may exhibit parting

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

92-2.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

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

Sapphire and Cinnabar Chemical Formula

While comparing Sapphire 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 Sapphire and Cinnabar chemical formula.

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

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Sapphire and Cinnabar Specific Gravity

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