White Opal and Poudretteite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.50
2.51-2.53
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Conchoidal, Splintery
Cleavage
Not Available
None
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
White Opal and Poudretteite Chemical Formula
While comparing White Opal and Poudretteite 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 White Opal and Poudretteite chemical formula.
- Chemical formula of White Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
White Opal and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is White Opal and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use White Opal and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of White Opal is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.