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Tanzanite
Tanzanite

Covellite
Covellite



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Tanzanite
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Covellite

Tanzanite and Covellite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Flexible
1.2 Solubility
Not Available
Not Available
1.3 Durability
Hard
Not Available
1.4 Specific Gravity
3.354.6-4.76
Amber
1 7.18
1.5 Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
1.6 Cleavage
Perfect {010}, imperfect {100}
Perfect on {0001}
1.7 Mohs Hardness
6.5-7Not Available
Amber
2 10
1.8 Chemical Composition
Ca2Al3(SiO4)3(OH)
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references

Tanzanite and Covellite Chemical Formula

While comparing Tanzanite 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 Tanzanite and Covellite chemical formula.

  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
  • Chemical formula of Covellite- CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references

Tanzanite and Covellite Specific Gravity

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