Cuprite is a major ore of Copper, and mined in many locations throughout the world.
The most noteworthy deposits occur in Australia, Chile, England, France, Mexico,
Namibia, and the United States. Specimens sourced from Namibia and the United States
are most usually considered gem-quality.
Cuprite is rated at 3.5 to 4 on the Moh's Scale of hardness. Because of its softness,
Cuprite is rarely used for jewelry purposes and is considered more of a collectors
Cuprite is commonly called “Ruby Copper” in the gem market because of the ruby-like
transparent stones that can range in color from red to deep red. Cuprite's well-developed
dark crystals can show internal reflections of the true deep red color inside an
almost black stone. Cuprite also has a sub-metallic to Adamantine luster, and a
refractive index which is even greater than that of Diamond.
Cuprite's rarity, deep red color, and high refractive index has made it a sought-after
collectors stone found in only a few collections.
Cuprite is most commonly used for ornamental carvings, or in bead form. If used
for jewelry purposes, Cuprite is almost exclusively fashioned
There are no known enhancements for transparent to translucent Cuprite. Opaque Cuprite
however is occasionally coated with clear, colorless wax or resin in order to improve
the overall durability and appearance of the stone.
Care & Cleaning:
Cuprite should only ever be cleaned with a soft, dry cloth. Avoid exposure to chemicals,
prolonged sunlight, or extremes of temperature change, as this can cause permanent coloration changes. Both ultrasonic and steam cleaners are to be avoided.
Store your Cuprite jewelry away from harder jewelry that may scratch or damage this