Cordierite Iolite and Sylvite Physical Properties

Cordierite Iolite

Sylvite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.56-2.661.993

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

Uneven, Brittle

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

7-7.52.5

2 10

1.8 Chemical Composition

Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

Not Available

Cordierite Iolite and Sylvite Chemical Formula

While comparing Cordierite Iolite and Sylvite 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 Cordierite Iolite and Sylvite chemical formula.

Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

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Cordierite Iolite and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite Iolite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Iolite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Cordierite Iolite is 1.993 whereas that of Sylvite is 1.993.