Covellite and Rubellite Tourmaline Physical Properties
Tenacity
Flexible
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.6-4.76
  
Not Available
  
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
  
Not Available
  
Cleavage
Perfect on {0001}
  
None
  
Mohs Hardness
Not Available
  
2.5-3
  
Chemical Composition
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
  
Ag
  
Covellite and Rubellite Tourmaline Chemical Formula
While comparing Covellite and Rubellite Tourmaline 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 Rubellite Tourmaline chemical formula.
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Rubellite Tourmaline- Ag
Covellite and Rubellite Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Covellite and Rubellite Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Rubellite Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Covellite is Not Available whereas that of Rubellite Tourmaline is Not Available.