Lapis lazuli and Diaspore Physical Properties
Tenacity
Not Available
Very brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.50-3.00
3.30-3.40
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Conchoidal, Brittle, Conchoidal
Cleavage
3,6
{010} perfect, {110} distinct, {100} in traces
Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Lapis lazuli and Diaspore Chemical Formula
While comparing Lapis lazuli and Diaspore 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 Diaspore 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 Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Lapis lazuli and Diaspore Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lapis lazuli and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lapis lazuli and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Lapis lazuli is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.