Rubellite and Fayalite Physical Properties

Rubellite

Fayalite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.01-3.064.392

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

Not Available

{010} moderate, {100} imperfect

1.7 Mohs Hardness

7-7.56.5-7

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.

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Rubellite and Fayalite Chemical Formula

While comparing Rubellite and Fayalite 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 Fayalite 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 Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

Rubellite Vs Scorzalite

Rubellite Vs Serendibite

Rubellite Vs Shattuckite

Rubellite and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 4.392 whereas that of Fayalite is 4.392.