I use pure Copper for all of my electroformed pendant pieces.
Copper is an incredible healing tool. Copper can conduct electrical impulses and magnify the energy transfer from crystals to the subject of the healing!
Copper slowly oxidizes over time. Although my jewelry is sealed once finished for longevity, oxidation can still occur. It is important to not shower or swim with your copper jewelry on. I also suggest taking off your copper rings while washing your hands to ensure logevity.
Treat your piece as you would any other special jewelry!