Apophyllite and Cryolite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.30-2.50
  
2.97
  
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
  
Uneven
  
Cleavage
Perfect on (001)
  
None observed
  
Mohs Hardness
4.5-5
  
2.5
  
Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
  
Na 3AlF 6Ulrich Henn and Claudio C.
  
Apophyllite and Cryolite Chemical Formula
While comparing Apophyllite and Cryolite 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 Apophyllite and Cryolite chemical formula.
- Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.
Apophyllite and Cryolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apophyllite and Cryolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Cryolite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 2.97 whereas that of Cryolite is 2.97.