Fire Opal and Boulder Opal Physical Properties

Fire 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

1.97-2.221.98-2.25

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001)

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

1.6 Cleavage

Not Available

1.7 Mohs Hardness

6-6.55-6.5

2 10

1.8 Chemical Composition

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

SiO 2 + H 2OUlrich Henn and Claudio C.

Fire Opal and Boulder Opal Chemical Formula

While comparing Fire 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 Fire Opal and Boulder Opal chemical formula.

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

Compare Red Gemstones

Fire Opal Vs Hackmanite

Fire Opal Vs Hexagonite

Fire Opal Vs Garnet

Fire Opal and Boulder Opal Specific Gravity

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