Vlasovite and Opal Physical Properties

Vlasovite

Opal

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1 Physical Properties

1.1 Tenacity

Brittle

BrittleWalter Schumann

1.2 Solubility

Nearly insoluble in HCl and HNO₃

hot salt water

1.3 Durability

Not Available

1.4 Specific Gravity

2.971.98-2.25

1 7.18

1.5 Fracture

Conchoidal, Brittle

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

Distinct on {010}

None

1.7 Mohs Hardness

65-6.5

2 10

1.8 Chemical Composition

Not Available

SiO₂ · nH₂O

Vlasovite and Opal Chemical Formula

While comparing Vlasovite and Opal 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 Vlasovite and Opal chemical formula.

Chemical formula of Opal- SiO₂ · nH₂O

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Vlasovite and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vlasovite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vlasovite and Opal Optical Properties during the identification of gemstone. Specific gravity of Vlasovite is 1.98-2.25 whereas that of Opal is 1.98-2.25.