Poudretteite and Sunstone Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.51-2.53
  
2.62-2.65
  
Fracture
Conchoidal, Splintery
  
Gemstones of the world (2001)
  
Cleavage
None
  
001
  
Mohs Hardness
5
  
6
  
Chemical Composition
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
  
Poudretteite and Sunstone Chemical Formula
While comparing Poudretteite 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 Poudretteite and Sunstone chemical formula.
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Sunstone- Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
Poudretteite and Sunstone Specific Gravity
Another important criteria for qualitative analysis of gemstones is Poudretteite and Sunstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Sunstone Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 2.62-2.65 whereas that of Sunstone is 2.62-2.65.