Crystal Opal and Vlasovite Physical Properties

Crystal Opal

Vlasovite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Nearly insoluble in HCl and HNO₃

1.3 Durability

Not Available

1.6 Specific Gravity

1.97-2.222.97

1 7.18

1.8 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Brittle

1.9 Cleavage

Not Available

Distinct on {010}

1.10 Mohs Hardness

5.5-6.56

2 10

1.11 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

Not Available

Crystal Opal and Vlasovite Chemical Formula

While comparing Crystal Opal and Vlasovite 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 Crystal Opal and Vlasovite chemical formula.

Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Crystal Opal Vs Dravite

Crystal Opal and Vlasovite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crystal Opal and Vlasovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Opal and Vlasovite Optical Properties during the identification of gemstone. Specific gravity of Crystal Opal is 2.97 whereas that of Vlasovite is 2.97.