Taaffeite and Cinnabar Physical Properties

Taaffeite

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

3.60-3.612

1 7.18

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Fracture

Conchoidal

Uneven

Cleavage

Imperfect/fair/absent

Prismatic {10 1 0}, perfect

Mohs Hardness

8-8.52-2.5

2 10

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Chemical Composition

Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references

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

Taaffeite and Cinnabar Chemical Formula

While comparing Taaffeite 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 Taaffeite and Cinnabar chemical formula.

Chemical formula of Taaffeite- Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Taaffeite and Cinnabar Specific Gravity

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