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Precious Opal
Precious Opal

Mottramite
Mottramite



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Precious Opal
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Mottramite

Precious Opal and Mottramite 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
Soluble
-
5.9
Sub-Conchoidal
None observed
3
PbCu(VO4)(OH)

Precious Opal and Mottramite Chemical Formula

While comparing Precious Opal and Mottramite 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 Mottramite chemical formula.

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Precious Opal and Mottramite Specific Gravity

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