Smaragdite and Cinnabar Physical Properties

Smaragdite

Cinnabar

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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

Specific Gravity

3.24-3.502

1 7.18

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Fracture

Uneven

Cleavage

None

Prismatic {10 1 0}, perfect

Mohs Hardness

5.52-2.5

2 10

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Chemical Composition

NaCa2(Al,Fe)3Si6O18(OH)4

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

Smaragdite and Cinnabar Chemical Formula

While comparing Smaragdite 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 Smaragdite and Cinnabar chemical formula.

Chemical formula of Smaragdite- NaCa2(Al,Fe)3Si6O18(OH)4
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Smaragdite and Cinnabar Specific Gravity

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