Opal and Lapis lazuli Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
2.50-3.00
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Chemical Composition
SiO2 · nH2O
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Opal and Lapis lazuli Chemical Formula
While comparing Opal 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 Opal and Lapis lazuli chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Opal and Lapis lazuli Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.