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Opal
Opal

Wood Opal
Wood Opal



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Opal
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Wood Opal

Opal and Wood Opal 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
 
-
-
-
1.98-2.50
-
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Opal and Wood Opal Chemical Formula

While comparing Opal and Wood 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 Opal and Wood Opal chemical formula.

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Opal and Wood Opal Specific Gravity

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