Aragonite and Variscite Physical Properties

Aragonite

Variscite

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Physical Properties

Tenacity

Brittle

Solubility

Dilute acid

Durability

Specific Gravity

2.93-2.962.42-2.58

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal, Splintery, ConchoidalWalter Schumann

Cleavage

Distinct on {010}, imperfect {110} and {011}

[010] perfect

Mohs Hardness

3.5-44-5

2 10

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Chemical Composition

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

AlPO₄ · 2(H₂O)

Aragonite and Variscite Chemical Formula

While comparing Aragonite 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 Aragonite and Variscite chemical formula.

Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Aragonite Vs Variscite

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Aragonite and Variscite Specific Gravity

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