Periclase and Poudretteite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.7-3.9
  
2.51-2.53
  
Fracture
Conchoidal, Brittle
  
Conchoidal, Splintery
  
Cleavage
{001} perfect; {111} imperfect, may exhibit parting on , {011}
  
None
  
Mohs Hardness
5.5-6
  
5
  
Chemical Composition
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
  
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Periclase and Poudretteite Chemical Formula
While comparing Periclase and Poudretteite 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 Poudretteite chemical formula.
- Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Periclase and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Periclase and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Periclase is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.