Dumortierite and Cinnabar Physical Properties

Dumortierite

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

3.26-3.412

1 7.18

1.5 Fracture

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

Distinct on {100}, poor on {110}; parting on {001}

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

7-8.52-2.5

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

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

Dumortierite and Cinnabar Chemical Formula

While comparing Dumortierite 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 Dumortierite and Cinnabar chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dumortierite and Cinnabar Specific Gravity

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