Tanzanite and Poudretteite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Hard
  
Not Available
  
Specific Gravity
3.35
  
2.51-2.53
  
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
  
Conchoidal, Splintery
  
Cleavage
Perfect {010}, imperfect {100}
  
None
  
Mohs Hardness
6.5-7
  
5
  
Chemical Composition
Ca2Al3(SiO4)3(OH)
  
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Tanzanite and Poudretteite Chemical Formula
While comparing Tanzanite 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 Tanzanite and Poudretteite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Tanzanite and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.