Kornerupine and Cordierite Iolite Physical Properties

Kornerupine

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

3.25-3.452.56-2.66

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

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

1.6 Cleavage

Good on {110}

Not Available

1.7 Mohs Hardness

6.57-7.5

2 10

1.8 Chemical Composition

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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

Kornerupine and Cordierite Iolite Chemical Formula

While comparing Kornerupine 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 Kornerupine and Cordierite Iolite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

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Kornerupine and Cordierite Iolite Specific Gravity

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