Diaspore and Covellite Physical Properties

Diaspore

Covellite

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1 Physical Properties

1.1 Tenacity

Very brittle

Flexible

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.404.6-4.76

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

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

1.6 Cleavage

{010} perfect, {110} distinct, {100} in traces

Perfect on {0001}

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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

Diaspore and Covellite Chemical Formula

While comparing Diaspore 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 Diaspore and Covellite chemical formula.

Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Diaspore and Covellite Specific Gravity

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