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Fire Opal and Poudretteite Physical Properties


Poudretteite and Fire Opal Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
1.97-2.22   
2.51-2.53   

Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)   
Conchoidal, Splintery   

Cleavage
Not Available   
None   

Mohs Hardness
6-6.5   
5   

Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references   
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Fire Opal and Poudretteite Chemical Formula

While comparing Fire Opal and Poudretteite 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 Poudretteite chemical formula.

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Fire Opal and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fire Opal and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fire Opal and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Fire Opal is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.

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