Spinel and Lapis lazuli Physical Properties
Tenacity
Not Available
Not Available
Solubility
none
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.64-3.66
2.50-3.00
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
None, but may exhibit slight parting
3,6
Chemical Composition
MgAl2O4
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Spinel and Lapis lazuli Chemical Formula
While comparing Spinel 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 Spinel and Lapis lazuli chemical formula.
- Chemical formula of Spinel- MgAl2O4
- Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Spinel and Lapis lazuli Specific Gravity
Another important criteria for qualitative analysis of gemstones is Spinel and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.