Periclase and Riebeckite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.7-3.9
  
3.28-3.44
  
Fracture
Conchoidal, Brittle
  
Uneven, Splintery, Brittle
  
Cleavage
{001} perfect; {111} imperfect, may exhibit parting on , {011}
  
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
  
Mohs Hardness
5.5-6
  
5.0-6.0
  
Chemical Composition
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Not Available
  
Periclase and Riebeckite Chemical Formula
While comparing Periclase and Riebeckite 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 Periclase and Riebeckite chemical formula.
- Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
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Periclase and Riebeckite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Periclase and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Periclase is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.