Ruby and Covellite Physical Properties
Tenacity
Brittle
  
Flexible
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
4.6-4.76
  
Fracture
Conchoidal
  
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
  
Cleavage
No true cleavage
  
Perfect on {0001}
  
Mohs Hardness
9
  
Not Available
  
Chemical Composition
Al 2 O 3
  
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
  
Ruby and Covellite Chemical Formula
While comparing Ruby 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 Ruby and Covellite chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Ruby and Covellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Covellite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 4.6-4.76 whereas that of Covellite is 4.6-4.76.
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