Periclase and Sunstone Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.7-3.9
  
2.62-2.65
  
Fracture
Conchoidal, Brittle
  
Gemstones of the world (2001)
  
Cleavage
{001} perfect; {111} imperfect, may exhibit parting on , {011}
  
001
  
Mohs Hardness
5.5-6
  
6
  
Chemical Composition
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
  
Periclase and Sunstone Chemical Formula
While comparing Periclase and Sunstone 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 Sunstone chemical formula.
- Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Sunstone- Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
Periclase and Sunstone Specific Gravity
Another important criteria for qualitative analysis of gemstones is Periclase and Sunstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Sunstone Optical Properties during the identification of gemstone. Specific gravity of Periclase is 2.62-2.65 whereas that of Sunstone is 2.62-2.65.