Healing Copper 4mm 1/2 Dome Style Shiny Ring Size 7 Completely round 4mm copper solid soldered rings Bright and shiny new rings. Copper oxydizes. Polish only with non abrasive cream polishes. Copper is a fast conductor of energy and conducts electrical impulses, thus magnifying any energy transfer. Being round, this copper helps to bring the universe energy to us as its color reflects our sun beautifully. Copper vibrates to number 1.