Sapphire and Cinnabar Physical Properties
Tenacity
Not Available
  
Slightly sectile
  
Solubility
insoluble
  
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.03
  
2
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Uneven, Uneven, Gemstones (2009), Brittle
  
Cleavage
None, but may exhibit parting
  
Prismatic {10 1 0}, perfect
  
Mohs Hardness
9
  
2-2.5
  
Chemical Composition
Al 2 O 3
  
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Sapphire and Cinnabar Chemical Formula
While comparing Sapphire and Cinnabar 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 Sapphire and Cinnabar chemical formula.
- Chemical formula of Sapphire- Al 2 O 3
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sapphire and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sapphire and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2 whereas that of Cinnabar is 2.
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