Colemanite and Star Sapphire Physical Properties

Colemanite

Star Sapphire

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.40-2.423.90-4.05

1 7.18

1.5 Fracture

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

Not Available

1.6 Cleavage

{010} Perfect, {001} Distinct

Not Available

1.7 Mohs Hardness

4.5Not Available

2 10

1.8 Chemical Composition

Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Al 2O 3Ulrich Henn and Claudio C.

Colemanite and Star Sapphire Chemical Formula

While comparing Colemanite and Star Sapphire 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 Colemanite and Star Sapphire chemical formula.

Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

Compare Colorless Gems

Colemanite Vs Cubic Zirconia

Colemanite Vs Diaspore

Colemanite Vs Datolite

Colemanite and Star Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Colemanite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Colemanite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Colemanite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.