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Emerald
Emerald

Cinnabar
Cinnabar



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Emerald
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Cinnabar

Emerald and Cinnabar Physical Properties

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Physical Properties

Tenacity

-
Slightly sectile

Solubility

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

Durability

Hard
-

Specific Gravity

2.67-2.782
1 7.18
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Fracture

Uneven, ConchoidalWalter Schumann
Uneven

Cleavage

Imperfect on the [0001]
Prismatic {10 1 0}, perfect

Mohs Hardness

7.5-82-2.5
2 10
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Chemical Composition

Be3Al2SiO6
HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Emerald and Cinnabar Chemical Formula

While comparing Emerald 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 Emerald and Cinnabar chemical formula.

  • Chemical formula of Emerald- Be3Al2SiO6
  • Chemical formula of Cinnabar- HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Emerald and Cinnabar Specific Gravity

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