Cinnabar and Peridot Physical Properties

Cinnabar

Peridot

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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

21.54-1.55

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Conchoidal

1.6 Cleavage

Prismatic {10 1 0}, perfect

Poor

1.7 Mohs Hardness

2-2.56.5-7

2 10

1.8 Chemical Composition

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

(Mg,Fe)₂SiO₄

Cinnabar and Peridot Chemical Formula

While comparing Cinnabar and Peridot 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 Peridot chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Peridot- (Mg,Fe)₂SiO₄

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Cinnabar and Peridot Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Peridot Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Peridot Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 1.54-1.55 whereas that of Peridot is 1.54-1.55.