Crystal Opal and Jet lignite Physical Properties

Crystal Opal

Jet lignite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.97-2.221.30-1.34

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Not Available

1.7 Mohs Hardness

5.5-6.52.5

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

Not Available

Crystal Opal and Jet lignite Chemical Formula

While comparing Crystal Opal and Jet lignite 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 Jet lignite chemical formula.

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

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Crystal Opal Vs Dravite

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Crystal Opal Vs Diaspore

Crystal Opal and Jet lignite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crystal Opal and Jet lignite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Opal and Jet lignite Optical Properties during the identification of gemstone. Specific gravity of Crystal Opal is 1.30-1.34 whereas that of Jet lignite is 1.30-1.34.