Gahnite and Dumortierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.00-4.62
3.26-3.41
Fracture
Conchoidal, Uneven
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Indistinct parting on [111]
Distinct on {100}, poor on {110}; parting on {001}
Mohs Hardness
7.5-8
7-8.5
Chemical Composition
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
AlAl6O3BSi3O18
Gahnite and Dumortierite Chemical Formula
While comparing Gahnite 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 Gahnite and Dumortierite chemical formula.
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Gahnite and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gahnite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.