Tanzanite and Elbaite Physical Properties

Tanzanite

Elbaite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.352.90-3.10

1 7.18

1.5 Fracture

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Perfect {010}, imperfect {100}

Poor/indistinct on {1120} and {1011}

1.7 Mohs Hardness

6.5-77

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Tanzanite and Elbaite Chemical Formula

While comparing Tanzanite and Elbaite 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 Tanzanite and Elbaite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Elbaite- 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

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Tanzanite and Elbaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.