Cinnabar and Grandidierite Physical Properties

Cinnabar

Grandidierite

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1 Physical Properties

1.1 Tenacity

Slightly sectile

Not Available

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

22.85-3.00

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

Prismatic {10 1 0}, perfect

Perfect

1.7 Mohs Hardness

2-2.57.5

2 10

1.8 Chemical Composition

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

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Cinnabar and Grandidierite Chemical Formula

While comparing Cinnabar and Grandidierite 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 Grandidierite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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Cinnabar and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.