Opal and Benitoite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Insoluble: HCl
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.61-3.68
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
None
[10 1 1] poor
Mohs Hardness
5-6.5
6-6.5
Chemical Composition
SiO2 · nH2O
BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Opal and Benitoite Chemical Formula
While comparing Opal and Benitoite 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 Opal and Benitoite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Benitoite- BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Opal and Benitoite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Benitoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Benitoite Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.61-3.68 whereas that of Benitoite is 3.61-3.68.