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Covellite
Covellite

Topaz
Topaz



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Covellite
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Topaz

Covellite and Topaz Physical Properties

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1 Physical Properties
1.1 Tenacity
Flexible
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
4.6-4.76
3.49-3.57
1.5 Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
1.6 Cleavage
Perfect on {0001}
[001] Perfect
1.7 Mohs Hardness
Not Available
8
1.8 Chemical Composition
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references
Al2SiO4(F,OH)2

Covellite and Topaz Chemical Formula

While comparing Covellite and Topaz 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 Topaz chemical formula.

  • Chemical formula of Covellite- CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references
  • Chemical formula of Topaz- Al2SiO4(F,OH)2

Covellite and Topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Covellite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Covellite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.