Elbaite and Neptunite Physical Properties

Elbaite

Neptunite

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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

Brittle

3.19-3.23

Conchoidal

{110} good

5-6

KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

Elbaite and Neptunite Chemical Formula

While comparing Elbaite and Neptunite 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 Neptunite chemical formula.

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Elbaite and Neptunite Specific Gravity

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