Sylvite and Crystal Opal Physical Properties

Sylvite

Crystal Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.9931.97-2.22

1 7.18

1.5 Fracture

Uneven, Brittle

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

1.6 Cleavage

Perfect on [100], [010], [001]

Not Available

1.7 Mohs Hardness

2.55.5-6.5

2 10

1.8 Chemical Composition

Not Available

SiO 2 + H 2OUlrich Henn and Claudio C.

Sylvite and Crystal Opal Chemical Formula

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

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

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Sylvite Vs Alexandrite

Sylvite and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sylvite and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sylvite and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Sylvite is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.