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Cuprite

Big Photo

Namibia
4.43 carats
© Rarestone.com

Cuprite Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
 
 

Cuprite Gemstones by Size

This table shows distribution of Cuprite gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:1.83 cts
Heaviest:35.31 cts
Average:14.02 cts
Total photos:8
Do you have a larger Cuprite? Why not upload a photo?
1.83ct to 5.18ct5.18ct to 8.53ct8.53ct to 11.87ct11.87ct to 15.22ct15.22ct to 18.57ct18.57ct to 21.92ct21.92ct to 25.27ct25.27ct to 28.61ct28.61ct to 31.96ct31.96ct to 35.31ct
General Information
Chemical Formula
Cu
 
2
O
Michael O’Donoghue, Gems, Sixth Edition (2006)
More from other references
Physical Properties of Cuprite
Mohs Hardness3.5 to 4
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Specific Gravity5.85 to 6.15
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Cleavage QualityDistinct
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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FractureUneven
Arthur Thomas, Gemstones (2009)
Heat SensitivitySensitive to heat
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Optical Properties of Cuprite
Refractive Index2.849
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Optical CharacterIsotropic
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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DispersionNil
Arthur Thomas, Gemstones (2009)
Colour
Colour (General)Red
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Causes of ColourRed, Band theory
W. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011)
TransparencyTranslucent,Opaque
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
LustreSubmetallic
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Crystallography of Cuprite
Crystal SystemIsometric
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
HabitCubes, octahedra or combinations of forms
Michael O’Donoghue, Gems, Sixth Edition (2006)
More from other references
Geological Environment
Where found:Occurs in the oxidized zones of copper deposits
Michael O’Donoghue, Gems, Sixth Edition (2006)
Further Information
Mineral information:Cuprite information at mindat.org
Significant Gem Localities
France
 
  • Auvergne-Rhône-Alpes
    • Rhône
      • Villefranche-sur-Saône
        • Chessy
mindat.org
Namibia
 
  • Oshikoto Region
    • Tsumeb
No reference listed
Ref 02
USA
 
  • Arizona
    • Cochise County
[MinRec 12:303-304]
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