Opal and Anatase Physical Properties
Tenacity
BrittleWalter Schumann
Brittle
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.82-3.97
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Subconchoidal, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None
Perfect on [001] and [011]
Mohs Hardness
5-6.5
5.5-6
Chemical Composition
SiO2 · nH2O
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Opal and Anatase Chemical Formula
While comparing Opal and Anatase 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 Anatase chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Anatase- TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Opal and Anatase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Anatase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Anatase Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.82-3.97 whereas that of Anatase is 3.82-3.97.