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Spinel
Spinel

Rubellite
Rubellite



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Spinel
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Rubellite

Spinel and Rubellite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.64-3.66
Conchoidal, Uneven
None, but may exhibit slight parting
8
MgAl2O4
 
-
-
-
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.

Spinel and Rubellite Chemical Formula

While comparing Spinel 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 Spinel and Rubellite chemical formula.

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Spinel and Rubellite Specific Gravity

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