Star Sapphire and Cinnabar Physical Properties

Star Sapphire

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

3.90-4.052

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

Not Available

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

Not Available2-2.5

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

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

Star Sapphire and Cinnabar Chemical Formula

While comparing Star Sapphire 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 Star Sapphire and Cinnabar chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Star Sapphire Vs Tortoiseshell

Star Sapphire Vs Tourmaline

Star Sapphire and Cinnabar Specific Gravity

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