Black Opal and Chrysoberyl Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
3.69-3.81
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Conchoidal to uneven, Brittle, Metallic, Uneven, ConchoidalWalter Schumann, Brittle, Metallic
Cleavage
Not Available
Distinct on {110}, imperfect on {010}, poor on {001}
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
BeAl 2 O 4
Black Opal and Chrysoberyl Chemical Formula
While comparing Black Opal and Chrysoberyl 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 Black Opal and Chrysoberyl chemical formula.
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
- Chemical formula of Chrysoberyl- BeAl 2 O 4
Black Opal and Chrysoberyl Specific Gravity
Another important criteria for qualitative analysis of gemstones is Black Opal and Chrysoberyl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Chrysoberyl Optical Properties during the identification of gemstone. Specific gravity of Black Opal is 3.69-3.81 whereas that of Chrysoberyl is 3.69-3.81.