Hematite and Common Opal Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.00-5.30
1.98-2.50
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
None, may show partings on {0001} and {10 1 1}
Not Available
Chemical Composition
Fe 2O 3Arthur Thomas , Gemstones (2009)
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Hematite and Common Opal Chemical Formula
While comparing Hematite and Common 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 Common Opal chemical formula.
- Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Hematite and Common Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hematite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Hematite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.