Azurite and Anhydrite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.70-3.90
  
2.90-2.98
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Cleavage
Perfect on {011}, fair on {100}, poor on {110}
  
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
  
Mohs Hardness
3.5-4
  
3.5
  
Chemical Composition
Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
  
Azurite and Anhydrite Chemical Formula
While comparing Azurite and Anhydrite 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 Azurite and Anhydrite chemical formula.
- Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Azurite and Anhydrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Azurite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Azurite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Azurite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.