Alexandrite and Cordierite Iolite Physical Properties

Alexandrite

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

3.69-3.812.56-2.66

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

1,1 ; 3,2.

Not Available

1.7 Mohs Hardness

8.57-7.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

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

Alexandrite and Cordierite Iolite Chemical Formula

While comparing Alexandrite 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 Alexandrite and Cordierite Iolite chemical formula.

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

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Alexandrite and Cordierite Iolite Specific Gravity

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