Chrysoprase and Atacamite Physical Properties

Chrysoprase

Atacamite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.58-2.643.745-3.776

1 7.18

1.5 Fracture

Gems, Sixth Edition (2006)

Conchoidal, Conchoidal, Brittle

1.6 Cleavage

None

Perfect on {010}, fair on {101}

1.7 Mohs Hardness

6.5-73-3.5

2 10

1.8 Chemical Composition

SiO₂ (with a high level of nickel impurities )

Cu2Cl(OH)3

Chrysoprase and Atacamite Chemical Formula

While comparing Chrysoprase and Atacamite 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 Chrysoprase and Atacamite chemical formula.

Chemical formula of Chrysoprase- SiO₂ (with a high level of nickel impurities )
Chemical formula of Atacamite- Cu2Cl(OH)3

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Chrysoprase and Atacamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrysoprase and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysoprase and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Chrysoprase is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.