Ruby and Diaspore Physical Properties
Tenacity
Brittle
  
Very brittle
  
Solubility
Not Available
  
insoluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
3.30-3.40
  
Fracture
Conchoidal
  
Conchoidal, Brittle, Conchoidal
  
Cleavage
No true cleavage
  
{010} perfect, {110} distinct, {100} in traces
  
Mohs Hardness
9
  
6.5-7
  
Chemical Composition
Al 2 O 3
  
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
  
Ruby and Diaspore Chemical Formula
While comparing Ruby and Diaspore 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 Diaspore chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Ruby and Diaspore Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.
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