Rubellite and Pyrite Physical Properties

Rubellite

Pyrite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

3.01-3.065.00-5.20

1 7.18

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Fracture

Conchoidal

Uneven, Conchoidal, ConchoidalWalter Schumann

Cleavage

Indiscernible

Indistinct on {001}; partings on {011} and {111}

Mohs Hardness

7-7.56-6.5

2 10

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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.

FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Rubellite and Pyrite Chemical Formula

While comparing Rubellite and Pyrite 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 Pyrite 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 Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Rubellite Vs Serendibite

Rubellite Vs Shattuckite

Rubellite Vs Sillimanite

Rubellite and Pyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.