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Named for the Greek khalkos meaning "copper," and "pyrite," chalcopyrite is a major ore of copper. It has a metallic luster, resembling gold. Specimens are often collected and are found in Colorado, Arizona in the USA, as well as England, Tasmania, Germany, Canada, Spain, Japan and China.

Chalcopyrite Polished
Chalcopyrite Classification
Common Name Chalcopyrite
Species Chalcopyrite
Chalcopyrite Optical Properties
Transparency Opaque
Refractive Index 0.000
Optic Character NA
Optic Sign NA
Fluorescence SWUV: Inert
LWUV: Inert
Pleochroism None
Chalcopyrite Characteristic Physical Properties
Hardness 3.5-4
Streak greenish-black
Specific Gravity 4.100-4.300
Toughness Poor
Luster Metallic
Fracture Uneven
Cleavage Poor, in two directions
Chalcopyrite Chemistry & Crystallography
Chemical Name copper iron sulfide
Chemical Formula CuFeS2
Crystal System Tetragonal
Chemistry Classification Sulfide

Chalcopyrite Colors

  • Yellow Chalcopyrite Yellow

Alternate Names

Copper Pyrite

Countries of Origin

China; Mexico; Peru

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Tim Matthews


Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.