Dumortierite and Star Ruby Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
3.95-4.10
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Not Available
Mohs Hardness
7-8.5
Not Available
Chemical Composition
AlAl6O3BSi3O18
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Dumortierite and Star Ruby Chemical Formula
While comparing Dumortierite and Star Ruby 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 Dumortierite and Star Ruby chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Dumortierite and Star Ruby Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.