Shop Online for Grey Agate Tree of Life Pendants at low prices. Grey agate is a stone of strength, grounding, and protection. It is used for relieving fatigue, releasing positive energy, and removing the influence of negative thoughts and energy. It is often used as a calming stone that brings hidden meaning and information to the surface. Grey Agate balances yin and yang energies, harmonizes emotional, mental and physical states. Grey Banded Agate is excellent for grounding and centring. Grey Banded Agate raises consciousness leading to spiritual growth.