Gyrolite and Iolite Physical Properties

Gyrolite

Iolite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.482.6-2.7

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

Not Available

1.6 Cleavage

Perfect on {001}

3,1

1.7 Mohs Hardness

27-7.5

2 10

1.8 Chemical Composition

NaCa16Si23AlO60(OH)8•64(H2O)

Mg₂Al₄Si₅O₁₈

Gyrolite and Iolite Chemical Formula

While comparing Gyrolite and Iolite 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 Gyrolite and Iolite chemical formula.

Chemical formula of Gyrolite- NaCa16Si23AlO60(OH)8•64(H2O)
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Gyrolite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gyrolite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gyrolite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Gyrolite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.