Lapis lazuli and Fuchsite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.50-3.00
  
2.77-2.88
  
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Uneven
  
Cleavage
3,6
  
Perfect basal
  
Mohs Hardness
5.5
  
2.5
  
Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
  
K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
  
Lapis lazuli and Fuchsite Chemical Formula
While comparing Lapis lazuli and Fuchsite 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 Fuchsite 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 Fuchsite- K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
Lapis lazuli and Fuchsite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lapis lazuli and Fuchsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lapis lazuli and Fuchsite Optical Properties during the identification of gemstone. Specific gravity of Lapis lazuli is 2.77-2.88 whereas that of Fuchsite is 2.77-2.88.