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Rubellite
Rubellite

Andalusite
Andalusite



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Rubellite
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Andalusite

Rubellite and Andalusite Physical Properties

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.
 
-
-
-
3.05-3.21
Uneven, Subconchoidal, Splintery
Good on {110}, poor on {100}
7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Rubellite and Andalusite Chemical Formula

While comparing Rubellite and Andalusite 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 Andalusite chemical formula.

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Rubellite and Andalusite Specific Gravity

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