Precious Opal and Powellite Physical Properties
Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
4.23
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Not Available
{111} Distinct
Mohs Hardness
5-6.5
3.5-4
Chemical Composition
SiO 2 · nH 2OGemdat.org , Management Team (2012)
CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Precious Opal and Powellite Chemical Formula
While comparing Precious Opal and Powellite 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 Precious Opal and Powellite chemical formula.
- Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)
- Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Precious Opal and Powellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Precious Opal and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Precious Opal and Powellite Optical Properties during the identification of gemstone. Specific gravity of Precious Opal is 4.23 whereas that of Powellite is 4.23.
