Black Opal and Moonstone Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
2.56-2.60
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Not Available
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Mohs Hardness
6-6.5
6-6.5
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
Black Opal and Moonstone Chemical Formula
While comparing Black Opal and Moonstone 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 Moonstone chemical formula.
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
- Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
Black Opal and Moonstone Specific Gravity
Another important criteria for qualitative analysis of gemstones is Black Opal and Moonstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Moonstone Optical Properties during the identification of gemstone. Specific gravity of Black Opal is 2.56-2.60 whereas that of Moonstone is 2.56-2.60.