Sapphire and Prehnite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.03
  
2.80-2.95
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
  
Cleavage
None, but may exhibit parting
  
Distinct on [001]
  
Mohs Hardness
9
  
6-6.5
  
Chemical Composition
Al 2 O 3
  
Ca2Al2Si3O12(OH)
  
Sapphire and Prehnite Chemical Formula
While comparing Sapphire and Prehnite 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 Prehnite chemical formula.
- Chemical formula of Sapphire- Al 2 O 3
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
Sapphire and Prehnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sapphire and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.
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