Rubellite and Dravite Physical Properties

Rubellite

Dravite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

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.

3.03-3.18

Uneven, Irregular, Conchoidal

{???} Indistinct

7-7.5

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Rubellite and Dravite Chemical Formula

While comparing Rubellite and Dravite 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 Rubellite and Dravite chemical formula.

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Rubellite and Dravite Specific Gravity

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