Corundum and Covellite Physical Properties
Tenacity
Brittle
Flexible
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
4.6-4.76
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
None – parting in 3 directions
Perfect on {0001}
Mohs Hardness
9
Not Available
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Corundum and Covellite Chemical Formula
While comparing Corundum 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 Corundum and Covellite chemical formula.
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Corundum and Covellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Corundum and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Covellite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 4.6-4.76 whereas that of Covellite is 4.6-4.76.