Sapphire and Steatite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.03
  
2.20-2.80
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Not Available
  
Cleavage
None, but may exhibit parting
  
Not Available
  
Mohs Hardness
9
  
Not Available
  
Chemical Composition
Al 2 O 3
  
Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)
  
Sapphire and Steatite Chemical Formula
While comparing Sapphire and Steatite 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 Steatite chemical formula.
- Chemical formula of Sapphire- Al 2 O 3
- Chemical formula of Steatite- Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)
Sapphire and Steatite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sapphire and Steatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Steatite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.20-2.80 whereas that of Steatite is 2.20-2.80.
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