Apophyllite and Lapis lazuli Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.30-2.50
  
2.50-3.00
  
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
  
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
Perfect on (001)
  
3,6
  
Mohs Hardness
4.5-5
  
5.5
  
Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
  
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
  
Apophyllite and Lapis lazuli Chemical Formula
While comparing Apophyllite and Lapis lazuli 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 Lapis lazuli chemical formula.
- Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Apophyllite and Lapis lazuli Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apophyllite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.