Description: black obsidian disc the virtues or properties of black obsidian black obsidian is a protective stone that acts as a powerful shield against negative energies and harmful influences. It absorbs negative energies from the environment and strengthens if necessary. This stone is very effective in combating geopathic stress and absorbing environmental pollution. Its three main virtues are: protection energy balance spiritual protection the characteristics and uses of the black obsidian disc this black obsidian disc is an object of protection and energy balance.