Iolite and Cinnabar Physical Properties

Iolite

Cinnabar

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1 Physical Properties

1.1 Tenacity

Not Available

Slightly sectile

1.2 Solubility

Not Available

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

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.72

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

3,1

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

7-7.52-2.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

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

Iolite and Cinnabar Chemical Formula

While comparing Iolite 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 Iolite and Cinnabar chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Iolite and Cinnabar Specific Gravity

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