Ruby and Lazulite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
3.04-3.17
  
Fracture
Conchoidal
  
Uneven, Uneven, Gemstones of the world (2001) More from other references
  
Cleavage
No true cleavage
  
{001} Indistinct, {???} Indistinct
  
Mohs Hardness
9
  
5.5
  
Chemical Composition
Al 2 O 3
  
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
  
Ruby and Lazulite Chemical Formula
While comparing Ruby and Lazulite 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 Lazulite chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Ruby and Lazulite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.
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