Cordierite Iolite and Starlite Physical Properties

Cordierite Iolite

Starlite

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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

2.56-2.663.91-4.73

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

1.7 Mohs Hardness

7-7.56.5-7.5

2 10

1.8 Chemical Composition

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

ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Cordierite Iolite and Starlite Chemical Formula

While comparing Cordierite Iolite and Starlite 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 Starlite chemical formula.

Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Chemical formula of Starlite- ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Cordierite Iolite and Starlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite Iolite and Starlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Iolite and Starlite Optical Properties during the identification of gemstone. Specific gravity of Cordierite Iolite is 3.91-4.73 whereas that of Starlite is 3.91-4.73.