Elbaite and Covellite Physical Properties

Elbaite

Covellite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.90-3.10

Uneven, Conchoidal

Poor/indistinct on {1120} and {1011}

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

Flexible

4.6-4.76

Perfect on {0001}

-9999

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Elbaite and Covellite Chemical Formula

While comparing Elbaite and Covellite 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 Elbaite and Covellite chemical formula.

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Elbaite and Covellite Specific Gravity

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