Hematite and Black Opal Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.00-5.30
1.97-2.22
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None, may show partings on {0001} and {10 1 1}
Not Available
Chemical Composition
Fe 2O 3Arthur Thomas , Gemstones (2009)
SiO 2 + H 2OUlrich Henn and Claudio C.
Hematite and Black Opal Chemical Formula
While comparing Hematite and Black 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 Hematite and Black Opal chemical formula.
- Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Hematite and Black Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hematite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Hematite is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.