Rubellite and Albite Physical Properties

Rubellite

Albite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.01-3.062.60-2.65

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

Not Available

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

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.

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Rubellite and Albite Chemical Formula

While comparing Rubellite and Albite 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 Albite chemical formula.

Chemical formula of Rubellite- 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.
Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

Rubellite Vs Shattuckite

Rubellite Vs Scorzalite

Rubellite Vs Serendibite

Rubellite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Albite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 2.60-2.65 whereas that of Albite is 2.60-2.65.