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Dioptase
Dioptase

Atacamite
Atacamite



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Dioptase
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Atacamite

Dioptase and Atacamite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Soluble
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.25-3.35
3.745-3.776
1.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Conchoidal, Conchoidal, Brittle
1.6 Cleavage
Perfect in three directions
Perfect on {010}, fair on {101}
1.7 Mohs Hardness
5
3-3.5
1.8 Chemical Composition
CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Cu2Cl(OH)3

Dioptase and Atacamite Chemical Formula

While comparing Dioptase and Atacamite 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 Dioptase and Atacamite chemical formula.

  • Chemical formula of Dioptase- CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Atacamite- Cu2Cl(OH)3

Dioptase and Atacamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dioptase and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dioptase and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Dioptase is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.