Dumortierite and Beryllonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
2.79-2.87
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Mohs Hardness
7-8.5
5.5-6
Chemical Composition
AlAl6O3BSi3O18
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dumortierite and Beryllonite Chemical Formula
While comparing Dumortierite and Beryllonite 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 Beryllonite chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dumortierite and Beryllonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Beryllonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Beryllonite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.79-2.87 whereas that of Beryllonite is 2.79-2.87.