Iolite and Arfvedsonite Physical Properties

Iolite

Arfvedsonite

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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

2.6-2.73.3-3.5

1 7.18

1.5 Fracture

Not Available

Uneven, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

3,1

Perfect on [110]

1.7 Mohs Hardness

7-7.55-6

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

NaNa2(Fe++4Fe+++)Si8O22(OH)2

Iolite and Arfvedsonite Chemical Formula

While comparing Iolite and Arfvedsonite 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 Arfvedsonite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Arfvedsonite- NaNa2(Fe++4Fe+++)Si8O22(OH)2

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Iolite and Arfvedsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Arfvedsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Arfvedsonite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.3-3.5 whereas that of Arfvedsonite is 3.3-3.5.