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Sapphire
Sapphire

Covellite
Covellite



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Sapphire
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Covellite

Sapphire and Covellite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
insoluble
-
3.95-4.03
Uneven
None, but may exhibit parting
9
Al 2 O 3
 
Flexible
-
-
4.6-4.76
-
Perfect on {0001}
-9999
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references

Sapphire and Covellite Chemical Formula

While comparing Sapphire and Covellite 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 Sapphire and Covellite chemical formula.

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Sapphire and Covellite Specific Gravity

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