Creedite and Fire Opal Physical Properties

Creedite

Fire Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.701.97-2.22

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

Perfect on {100}

Not Available

1.7 Mohs Hardness

4.56-6.5

2 10

1.8 Chemical Composition

Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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

Creedite and Fire Opal Chemical Formula

While comparing Creedite and Fire 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 Creedite and Fire Opal chemical formula.

Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.
Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

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Creedite and Fire Opal Specific Gravity

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