Sylvite and Iolite Physical Properties

Sylvite

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

1.9932.6-2.7

1 7.18

1.5 Fracture

Uneven, Brittle

Not Available

1.6 Cleavage

Perfect on [100], [010], [001]

3,1

1.7 Mohs Hardness

2.57-7.5

2 10

1.8 Chemical Composition

Not Available

Mg₂Al₄Si₅O₁₈

Sylvite and Iolite Chemical Formula

While comparing Sylvite 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 Sylvite and Iolite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Sylvite and Iolite Specific Gravity

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