Phosgenite and Topaz Physical Properties
Tenacity
Sectile
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
6.13
  
3.49-3.57
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
  
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Distinct on {001} and {110}, indistinct on {100}
  
[001] Perfect
  
Mohs Hardness
2-3
  
8
  
Chemical Composition
Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Al2SiO4(F,OH)2
  
Phosgenite and Topaz Chemical Formula
While comparing Phosgenite and Topaz 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 Phosgenite and Topaz chemical formula.
- Chemical formula of Phosgenite- Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Topaz- Al2SiO4(F,OH)2
Phosgenite and Topaz Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phosgenite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phosgenite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Phosgenite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.