Vishnevite and Periclase Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
3.7-3.9
  
Fracture
Brittle, Uneven
  
Conchoidal, Brittle
  
Cleavage
Perfect
  
{001} perfect; {111} imperfect, may exhibit parting on , {011}
  
Mohs Hardness
5-6
  
5.5-6
  
Chemical Composition
Not Available
  
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Vishnevite and Periclase Chemical Formula
While comparing Vishnevite and Periclase 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 Vishnevite and Periclase chemical formula.
>- Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Vishnevite and Periclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vishnevite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vishnevite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Vishnevite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.