Andradite and Lapis lazuli Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.70-4.10
2.50-3.00
Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Andradite and Lapis lazuli Chemical Formula
While comparing Andradite 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 Andradite and Lapis lazuli chemical formula.
- Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Andradite and Lapis lazuli Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andradite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Andradite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.