Villiaumite and Boulder Opal Physical Properties

Villiaumite

Boulder Opal

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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

2.791.98-2.25

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

{100} Perfect, {010} Perfect, {001} Perfect

Not Available

1.7 Mohs Hardness

25-6.5

2 10

1.8 Chemical Composition

NaFUlrich Henn and Claudio C.

SiO 2 + H 2OUlrich Henn and Claudio C.

Villiaumite and Boulder Opal Chemical Formula

While comparing Villiaumite and Boulder 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 Villiaumite and Boulder Opal chemical formula.

Chemical formula of Villiaumite- NaFUlrich Henn and Claudio C.
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Gems Found in America

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Villiaumite and Boulder Opal Specific Gravity

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