Violane and Opal Physical Properties
Physical Properties
Tenacity
Not Available
BrittleWalter Schumann
Solubility
Not Available
hot salt water
Durability
Not Available
Not Available
Specific Gravity
3.22-3.40
1.98-2.25
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Not Available
None
Mohs Hardness
5-6
5-6.5
Chemical Composition
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
SiO2 · nH2O
Violane and Opal Chemical Formula
While comparing Violane and 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 Violane and Opal chemical formula.
- Chemical formula of Violane- (Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
- Chemical formula of Opal- SiO2 · nH2O
Violane and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Violane and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Violane and Opal Optical Properties during the identification of gemstone. Specific gravity of Violane is 1.98-2.25 whereas that of Opal is 1.98-2.25.
