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