Starlite and Lapis lazuli Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.91-4.73
2.50-3.00
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Not Available
3,6
Mohs Hardness
6.5-7.5
5.5
Chemical Composition
ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Starlite and Lapis lazuli Chemical Formula
While comparing Starlite 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 Starlite and Lapis lazuli chemical formula.
- Chemical formula of Starlite- ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Starlite and Lapis lazuli Specific Gravity
Another important criteria for qualitative analysis of gemstones is Starlite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Starlite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Starlite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.