Black Opal and Pyrope Almandine Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
3.62-4.20
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)
Cleavage
Not Available
Not Available
Mohs Hardness
6-6.5
7-7.5
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
(Fe,Mg) 3Al 2(SiO 4) 3gemdat.org , Management Team (2012)
Black Opal and Pyrope Almandine Chemical Formula
While comparing Black Opal and Pyrope Almandine 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 Pyrope Almandine chemical formula.
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
- Chemical formula of Pyrope Almandine- (Fe,Mg) 3Al 2(SiO 4) 3gemdat.org , Management Team (2012)
Black Opal and Pyrope Almandine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Black Opal and Pyrope Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Pyrope Almandine Optical Properties during the identification of gemstone. Specific gravity of Black Opal is 3.62-4.20 whereas that of Pyrope Almandine is 3.62-4.20.