Beryllonite and Cordierite Physical Properties

Beryllonite

Cordierite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.79-2.872.57-2.66

1 7.18

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Fracture

Conchoidal

Subconchoidal, Conchoidal

Cleavage

{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces

Fair on {100}, poor on {001} and {010}

Mohs Hardness

5.5-67-7.5

2 10

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Chemical Composition

NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Mg2Al4Si5O18

Beryllonite and Cordierite Chemical Formula

While comparing Beryllonite and Cordierite 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 Beryllonite and Cordierite chemical formula.

Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Cordierite- Mg2Al4Si5O18

Compare Colorless Gems

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Beryllonite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Beryllonite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.