Periclase and Tourmaline Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.7-3.9
  
2.85-3.35
  
Fracture
Conchoidal, Brittle
  
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
{001} perfect; {111} imperfect, may exhibit parting on , {011}
  
Indistinct
  
Mohs Hardness
5.5-6
  
7-7.5
  
Chemical Composition
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
  
Periclase and Tourmaline Chemical Formula
While comparing Periclase and Tourmaline 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 Tourmaline chemical formula.
- Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Periclase and Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Periclase and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Periclase is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.