Covellite and Ruby Physical Properties

Covellite

Ruby

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1 Physical Properties

1.1 Tenacity

Flexible

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.6-4.763.97-4.05

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

Perfect on {0001}

No true cleavage

1.7 Mohs Hardness

Not Available9

2 10

1.8 Chemical Composition

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Al ₂ O ₃

Covellite and Ruby Chemical Formula

While comparing Covellite and Ruby 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 Covellite and Ruby chemical formula.

Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Ruby- Al ₂ O ₃

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Covellite and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Covellite and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Ruby Optical Properties during the identification of gemstone. Specific gravity of Covellite is 3.97-4.05 whereas that of Ruby is 3.97-4.05.