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Boulder Opal
Boulder Opal

Povondraite
Povondraite



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Boulder Opal
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Povondraite

Boulder Opal and Povondraite 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 + H 2OUlrich Henn and Claudio C.
 
-
-
-
3.26
Uneven
None
-9999
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

Boulder Opal and Povondraite Chemical Formula

While comparing Boulder 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 Boulder Opal and Povondraite chemical formula.

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Boulder Opal and Povondraite Specific Gravity

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