Tantalite and Rubellite Physical Properties

Tantalite

Rubellite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

5.2

Subconchoidal, Conchoidal

Good in one direction

6-6.5

(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references

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.

Tantalite and Rubellite Chemical Formula

While comparing Tantalite 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 Tantalite and Rubellite chemical formula.

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Tantalite and Rubellite Specific Gravity

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