Beryl and Phenakite Physical Properties

Beryl

Phenakite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.60-2.902.90-2.98

1 7.18

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Fracture

Uneven, Conchoidal, Irregular

Conchoidal, ConchoidalWalter Schumann

Cleavage

Imperfect on {0001}

Distinct on {11 2 0}, imperfect on {10 1 1}

Mohs Hardness

7.5-87.5-8

2 10

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Chemical Composition

Be₃Al₂Si₆O₁₈

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Beryl and Phenakite Chemical Formula

While comparing Beryl and Phenakite 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 Beryl and Phenakite chemical formula.

Chemical formula of Beryl- Be₃Al₂Si₆O₁₈
Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Beryl and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Beryl and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryl and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Beryl is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.