Mottramite and Iolite Physical Properties

Mottramite

Iolite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.92.6-2.7

1 7.18

1.5 Fracture

Sub-Conchoidal, Brittle, Metallic

Not Available

1.6 Cleavage

None observed

3,1

1.7 Mohs Hardness

37-7.5

2 10

1.8 Chemical Composition

Not Available

Mg₂Al₄Si₅O₁₈

Mottramite and Iolite Chemical Formula

While comparing Mottramite 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 Mottramite and Iolite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Mottramite and Iolite Specific Gravity

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