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Cuprite
Cuprite

Crystal Opal
Crystal Opal



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Cuprite
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Crystal Opal

Cuprite and Crystal Opal Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
5.85-6.15
1.97-2.22
1.5 Fracture
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Fair in four directions forming octahedrons
Not Available
1.7 Mohs Hardness
3.5-4
5.5-6.5
1.8 Chemical Composition
Cu 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
SiO 2 + H 2OUlrich Henn and Claudio C.

Cuprite and Crystal Opal Chemical Formula

While comparing Cuprite and Crystal Opal 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 Cuprite and Crystal Opal chemical formula.

  • Chemical formula of Cuprite- Cu 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Cuprite and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cuprite and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cuprite and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Cuprite is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.