Dioptase and Variscite Physical Properties

Dioptase

Variscite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.25-3.352.42-2.58

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Conchoidal, Splintery, ConchoidalWalter Schumann

Cleavage

Perfect in three directions

[010] perfect

Mohs Hardness

54-5

2 10

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Chemical Composition

CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

AlPO₄ · 2(H₂O)

Dioptase and Variscite Chemical Formula

While comparing Dioptase 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 Dioptase and Variscite chemical formula.

Chemical formula of Dioptase- CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Dioptase and Variscite Specific Gravity

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