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Creedite and Common Opal Physical Properties


Common Opal and Creedite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.70   
1.98-2.50   

Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle   
Conchoidal, Conchoidal, Gemstones of the world (2001)   

Cleavage
Perfect on {100}   
Not Available   

Mohs Hardness
4.5   
5.5-6.5   

Chemical Composition
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.   
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)   

Optical Properties >>
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Creedite and Common Opal Chemical Formula

While comparing Creedite and Common 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 Common Opal chemical formula.

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Creedite and Common Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Creedite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Creedite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Creedite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.

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