Dumortierite and Harlequin Opal Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
1.98-2.50
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Not Available
Mohs Hardness
7-8.5
5.5-6.5
Chemical Composition
AlAl6O3BSi3O18
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Dumortierite and Harlequin Opal Chemical Formula
While comparing Dumortierite and Harlequin Opal 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 Harlequin Opal chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Harlequin Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Dumortierite and Harlequin Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Harlequin Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Harlequin Opal Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 1.98-2.50 whereas that of Harlequin Opal is 1.98-2.50.