Ruby and Azurite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
3.70-3.90
  
Fracture
Conchoidal
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Cleavage
No true cleavage
  
Perfect on {011}, fair on {100}, poor on {110}
  
Mohs Hardness
9
  
3.5-4
  
Chemical Composition
Al 2 O 3
  
Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Ruby and Azurite Chemical Formula
While comparing Ruby and Azurite 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 Azurite chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ruby and Azurite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Azurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Azurite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.70-3.90 whereas that of Azurite is 3.70-3.90.
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