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Precious Opal
Precious Opal

Poudretteite
Poudretteite



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Precious Opal
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Poudretteite

Precious Opal and Poudretteite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.25
Conchoidal
None
5-6.5
SiO 2 · nH 2OGemdat.org , Management Team (2012)
 
Brittle
-
-
2.51-2.53
Conchoidal, Splintery
None
5
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Precious Opal and Poudretteite Chemical Formula

While comparing Precious 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 Precious Opal and Poudretteite chemical formula.

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Precious Opal and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Precious Opal and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Precious Opal Vs Poudretteite during the identification of gemstone. Specific gravity of Precious Opal is whereas that of Poudretteite is .