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Opal
Opal

Povondraite
Povondraite



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Opal
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Povondraite

Opal and Povondraite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O
 
-
-
-
3.26
Uneven
None
-9999
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

Opal and Povondraite Chemical Formula

While comparing Opal and Povondraite 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 Opal and Povondraite chemical formula.

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Opal and Povondraite Specific Gravity

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