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Black Opal
Black Opal

Blue spinel
Blue spinel



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Black Opal
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Blue spinel

Black Opal and Blue spinel Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.97-2.22Not Available
Amber
1 7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Not Available
1.6 Cleavage
Not Available
Not Available
1.7 Mohs Hardness
6-6.5Not Available
Amber
2 10
1.8 Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
Not Available

Black Opal and Blue spinel Chemical Formula

While comparing Black Opal and Blue spinel 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 Blue spinel chemical formula.

  • Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
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Black Opal and Blue spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Black Opal and Blue spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Blue spinel Optical Properties during the identification of gemstone. Specific gravity of Black Opal is Not Available whereas that of Blue spinel is Not Available.