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Precious Opal
Precious Opal

Rubellite
Rubellite



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Precious Opal
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Rubellite

Precious Opal and Rubellite 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)
 
-
-
-
3.01-3.06
Conchoidal
Indiscernible
7-7.5
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Precious Opal and Rubellite Chemical Formula

While comparing Precious Opal and Rubellite 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 Rubellite chemical formula.

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Precious Opal and Rubellite Specific Gravity

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