Painite and Common Opal Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.00-4.03
1.98-2.50
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
Not Available
Not Available
Mohs Hardness
7.5-8
5.5-6.5
Chemical Composition
CaZrBAl 9O 18Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Painite and Common Opal Chemical Formula
While comparing Painite and Common 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 Painite and Common Opal chemical formula.
- Chemical formula of Painite- CaZrBAl 9O 18Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Painite and Common Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Painite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Painite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Painite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.