Ruby and Augelite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
2.70-2.75
  
Fracture
Conchoidal
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
No true cleavage
  
From the Greek for luster, for its pearly luster on the cleavage.
  
Mohs Hardness
9
  
4.5-5
  
Chemical Composition
Al 2 O 3
  
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Ruby and Augelite Chemical Formula
While comparing Ruby and Augelite 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 Augelite chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Ruby and Augelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Augelite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.70-2.75 whereas that of Augelite is 2.70-2.75.
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