Opal and Cobaltite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
6.3
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
Cleavage
None
{100} Good, {010} Good, {001} Good
Chemical Composition
SiO2 · nH2O
CoAsSAnthony et al , Handbook of mineralogy (2001)
Opal and Cobaltite Chemical Formula
While comparing Opal and Cobaltite 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 Cobaltite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Opal and Cobaltite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Opal is 6.3 whereas that of Cobaltite is 6.3.