Iolite and Benitoite Physical Properties

Iolite

Benitoite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Insoluble: HCl

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.73.61-3.68

1 7.18

1.5 Fracture

Not Available

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

3,1

[10 1 1] poor

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Iolite and Benitoite Chemical Formula

While comparing Iolite and Benitoite 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 Iolite and Benitoite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Benitoite- BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Iolite and Benitoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Benitoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Benitoite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.61-3.68 whereas that of Benitoite is 3.61-3.68.