Sugilite and Lapis lazuli Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.79
2.50-3.00
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Poor on {0001}
3,6
Mohs Hardness
5.5-6.5
5.5
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Sugilite and Lapis lazuli Chemical Formula
While comparing Sugilite 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 Sugilite and Lapis lazuli chemical formula.
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) 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
Sugilite and Lapis lazuli Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sugilite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.