Covellite and Andradite Physical Properties

Covellite

Andradite

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1 Physical Properties

1.1 Tenacity

Flexible

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.6-4.763.70-4.10

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on {0001}

none

1.7 Mohs Hardness

Not Available6.5-7

2 10

1.8 Chemical Composition

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

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Covellite and Andradite Chemical Formula

While comparing Covellite and Andradite 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 Covellite and Andradite chemical formula.

Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Blue Gemstones

Covellite Vs Fluorapatite

Covellite Vs Falcons Eye

Covellite Vs Elbaite

Covellite and Andradite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Covellite and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Andradite Optical Properties during the identification of gemstone. Specific gravity of Covellite is 3.70-4.10 whereas that of Andradite is 3.70-4.10.