Iolite and Albite Physical Properties

Iolite

Albite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.72.60-2.65

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

3,1

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Iolite and Albite Chemical Formula

While comparing Iolite and Albite 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 Albite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Iolite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Albite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.60-2.65 whereas that of Albite is 2.60-2.65.