Black obsidian and hematite with engravable pendant.
Black Obsidian - Stone is a powerful cleanser of psychic smog created within your aura, and is a strong psychic protection stone.Has powerful metaphysical properties that will help to shield you against negativity. The energy of these stones may stimulate the gift of prophesy and may boost precognition.
Hematite - grounds and protects us. It strengthens our connection with the earth, making us feel safe and secure. It endows us with courage, strength, endurance and vitality. A "stone for the mind", Hematite stimulates concentration and focus, enhancing memory and original thought.