Tourmaline and Cordierite Iolite Physical Properties

Tourmaline

Cordierite Iolite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.85-3.352.56-2.66

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Indistinct

Not Available

1.7 Mohs Hardness

7-7.57-7.5

2 10

1.8 Chemical Composition

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

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

Tourmaline and Cordierite Iolite Chemical Formula

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

Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

Compare Semi Precious Gemstones

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Tourmaline and Cordierite Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tourmaline and Cordierite Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Cordierite Iolite Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 2.56-2.66 whereas that of Cordierite Iolite is 2.56-2.66.