Phenakite and Variscite Physical Properties

Phenakite

Variscite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.90-2.982.42-2.58

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Conchoidal, Splintery, ConchoidalWalter Schumann

Cleavage

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

[010] perfect

Mohs Hardness

7.5-84-5

2 10

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Chemical Composition

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

AlPO₄ · 2(H₂O)

Phenakite and Variscite Chemical Formula

While comparing Phenakite and Variscite 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 Phenakite and Variscite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Phenakite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.