One of the most popular uses of black obsidian is may can help create a shield of protection to ward off negative or harmful energies. Wearing black obsidian or carrying it with you may can help to absorb negativity that you may encounter.
cooper chain has EMF electrical magnetic may can help shielding from radio frequencies because of its ability to absorb both magnetic and radio waves. It may can also help be highly effective in attenuating magnetic and electrical waves
This necklace may can help with double protection and a must have I don’t leave home without it .