Glaucophane and Iolite Physical Properties

Glaucophane

Iolite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3-3.152.6-2.7

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Not Available

1.6 Cleavage

Good on [110] and on [001]

3,1

1.7 Mohs Hardness

6.0-6.57-7.5

2 10

1.8 Chemical Composition

[ ]Na2(Mg3Al2)Si8O22(OH)2

Mg₂Al₄Si₅O₁₈

Glaucophane and Iolite Chemical Formula

While comparing Glaucophane 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 Glaucophane and Iolite chemical formula.

Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Glaucophane and Iolite Specific Gravity

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