Iolite and Charlesite Physical Properties

Iolite

Charlesite

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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

2.6-2.71.79

1 7.18

1.5 Fracture

Not Available

Irregular/uneven, Brittle, Metallic

1.6 Cleavage

3,1

Perfect on {10bar10}

1.7 Mohs Hardness

7-7.52.5

2 10

2.5 Chemical Composition

Mg₂Al₄Si₅O₁₈

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Iolite and Charlesite Chemical Formula

While comparing Iolite and Charlesite 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 Charlesite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

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Iolite and Charlesite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Charlesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Charlesite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 1.79 whereas that of Charlesite is 1.79.