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