Sapphire and Forsterite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.03
  
3.23-3.26
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Cleavage
None, but may exhibit parting
  
Perfect on {010} imperfect on {100}
  
Mohs Hardness
9
  
6.5-7
  
Chemical Composition
Al 2 O 3
  
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Sapphire and Forsterite Chemical Formula
While comparing Sapphire and Forsterite 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 Forsterite chemical formula.
- Chemical formula of Sapphire- Al 2 O 3
- Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Sapphire and Forsterite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sapphire and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.
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