Anatase and Blue John Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.82-3.97
  
3.00-3.25
  
Fracture
Subconchoidal, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
  
Not Available
  
Cleavage
Perfect on [001] and [011]
  
Not Available
  
Mohs Hardness
5.5-6
  
Not Available
  
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
  
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Anatase and Blue John Chemical Formula
While comparing Anatase and Blue John 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 Anatase and Blue John chemical formula.
- Chemical formula of Anatase- TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Anatase and Blue John Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anatase and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anatase and Blue John Optical Properties during the identification of gemstone. Specific gravity of Anatase is 3.00-3.25 whereas that of Blue John is 3.00-3.25.