Zircon and Poudretteite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.93-4.73
  
2.51-2.53
  
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Conchoidal, Splintery
  
Cleavage
{110} and {111}
  
None
  
Mohs Hardness
7.5
  
5
  
Chemical Composition
ZrSiO4
  
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Zircon and Poudretteite Chemical Formula
While comparing Zircon 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 Zircon and Poudretteite chemical formula.
- Chemical formula of Zircon- ZrSiO4
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Zircon and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Zircon and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zircon and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Zircon is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.