Labradorite and Dumortierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
3.26-3.41
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Distinct on {100}, poor on {110}; parting on {001}
Mohs Hardness
6-6.5
7-8.5
Chemical Composition
(Na,Ca)1-2Si3-2O8
AlAl6O3BSi3O18
Labradorite and Dumortierite Chemical Formula
While comparing Labradorite 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 Labradorite and Dumortierite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Labradorite and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.