Wood Opal and Boulder Opal Physical Properties

Wood Opal

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

1.98-2.501.98-2.25

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

1.7 Mohs Hardness

5.5-6.55-6.5

2 10

1.8 Chemical Composition

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

SiO 2 + H 2OUlrich Henn and Claudio C.

Wood Opal and Boulder Opal Chemical Formula

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

Chemical formula of Wood Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Gems Found In Australia

Wood Opal Vs Druzy

Wood Opal Vs Alunite

Wood Opal Vs Canadian Ammolite

Wood Opal and Boulder Opal Specific Gravity

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