Diaspore and Black Opal Physical Properties
Tenacity
Very brittle
Not Available
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.30-3.40
1.97-2.22
Fracture
Conchoidal, Brittle, Conchoidal
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{010} perfect, {110} distinct, {100} in traces
Not Available
Mohs Hardness
6.5-7
6-6.5
Chemical Composition
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
SiO 2 + H 2OUlrich Henn and Claudio C.
Diaspore and Black Opal Chemical Formula
While comparing Diaspore 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 Diaspore and Black Opal chemical formula.
- Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Diaspore and Black Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Diaspore and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.