Prasiolite and Covellite Physical Properties

Prasiolite

Covellite

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1 Physical Properties

1.1 Tenacity

Brittle

Flexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.654.6-4.76

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

3,1

Perfect on {0001}

1.7 Mohs Hardness

7Not Available

2 10

1.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Prasiolite and Covellite Chemical Formula

While comparing Prasiolite and Covellite 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 Prasiolite and Covellite chemical formula.

Chemical formula of Prasiolite- SiO 2Ulrich Henn and Claudio C.
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Prasiolite and Covellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prasiolite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prasiolite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Prasiolite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.