Cordierite Iolite and Tourmaline Physical Properties

Cordierite Iolite

Tourmaline

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.56-2.662.85-3.35

1 7.18

1.5 Fracture

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

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

Indistinct

1.7 Mohs Hardness

7-7.57-7.5

2 10

1.8 Chemical Composition

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

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

Cordierite Iolite and Tourmaline Chemical Formula

While comparing Cordierite Iolite and Tourmaline 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 Tourmaline chemical formula.

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

Compare Blue Gemstones

Cordierite Iolite Vs Dumortierite

Cordierite Iolite Vs Elbaite

Cordierite Iolite Vs Falcons Eye

Cordierite Iolite and Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite Iolite and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Iolite and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Cordierite Iolite is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.