Black Opal and Romanchite Physical Properties

Black Opal and Romanchite Chemical Formula

While comparing Black Opal and Romanchite 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 Romanchite chemical formula.

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

Another important criteria for qualitative analysis of gemstones is Black Opal and Romanchite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Romanchite Optical Properties during the identification of gemstone. Specific gravity of Black Opal is 4.70-4.74 whereas that of Romanchite is 4.70-4.74.