Labradorite and Cinnabar Physical Properties

Labradorite

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

2.69-2.722

1 7.18

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Fracture

Uneven, Conchoidal

Uneven

Cleavage

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

Prismatic {10 1 0}, perfect

Mohs Hardness

6-6.52-2.5

2 10

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Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

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

Labradorite and Cinnabar Chemical Formula

While comparing Labradorite 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 Labradorite and Cinnabar chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Labradorite and Cinnabar Specific Gravity

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