Lazurite and Dumortierite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.75
3.26-3.41
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Imperfect on {110}
Distinct on {100}, poor on {110}; parting on {001}
Chemical Composition
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
AlAl6O3BSi3O18
Lazurite and Dumortierite Chemical Formula
While comparing Lazurite and Dumortierite 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 Lazurite and Dumortierite chemical formula.
- Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Lazurite and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lazurite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.