Opal and Pezzottaite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
2.90-3.14
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
None
Imperfect; basal
Mohs Hardness
5-6.5
7.5-8
Chemical Composition
SiO2 · nH2O
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
Opal and Pezzottaite Chemical Formula
While comparing Opal and Pezzottaite 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 Pezzottaite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
Opal and Pezzottaite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Pezzottaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Pezzottaite Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.90-3.14 whereas that of Pezzottaite is 2.90-3.14.