Proustite and Sapphire Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
insoluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.51-5.64
  
3.95-4.03
  
Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Cleavage
Distinct on {10 1 1}
  
None, but may exhibit parting
  
Mohs Hardness
2.5
  
9
  
Chemical Composition
Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Al 2 O 3
  
Proustite and Sapphire Chemical Formula
While comparing Proustite and Sapphire 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 Proustite and Sapphire chemical formula.
- Chemical formula of Proustite- Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sapphire- Al 2 O 3
Proustite and Sapphire Specific Gravity
Another important criteria for qualitative analysis of gemstones is Proustite and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Proustite and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Proustite is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.