Lazurite and Cinnabar Physical Properties

Lazurite

Cinnabar

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Physical Properties

Tenacity

Brittle

Slightly sectile

Solubility

Soluble

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

Durability

Specific Gravity

2.752

1 7.18

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Fracture

Uneven, Conchoidal

Uneven

Cleavage

Imperfect on {110}

Prismatic {10 1 0}, perfect

Mohs Hardness

5.52-2.5

2 10

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Chemical Composition

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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

Lazurite and Cinnabar Chemical Formula

While comparing Lazurite 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 Lazurite and Cinnabar chemical formula.

Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Lazurite and Cinnabar Specific Gravity

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