Opal and Witherite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
4.27-4.35
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
None
{010} Distinct
Mohs Hardness
5-6.5
3-3.5
Chemical Composition
SiO2 · nH2O
BaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Opal and Witherite Chemical Formula
While comparing Opal and Witherite 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 Witherite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Witherite- BaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Opal and Witherite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Witherite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Witherite Optical Properties during the identification of gemstone. Specific gravity of Opal is 4.27-4.35 whereas that of Witherite is 4.27-4.35.