Lapis lazuli and Ajoite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Decomposed by acids
Durability
Not Available
Not Available
Specific Gravity
2.50-3.00
2.96
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Not Available
Cleavage
3,6
Perfect on {010}
Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Lapis lazuli and Ajoite Chemical Formula
While comparing Lapis lazuli and Ajoite 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 Ajoite 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 Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Lapis lazuli and Ajoite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lapis lazuli and Ajoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lapis lazuli and Ajoite Optical Properties during the identification of gemstone. Specific gravity of Lapis lazuli is 2.96 whereas that of Ajoite is 2.96.