Agate is traditionally associated with strength, harmony and protection. It is believed to encourage healing and bring calm, as well as restoring yin/yang energy. Agate is also believed to bring good luck, and is especially protective for children. Many believe that agate is helpful in alleviating stress and anxiety, increasing emotional strength and dispelling fears. In terms of physical health, it is thought that agate assists with detoxification, and is helpful with stomach issues, insomnia and tooth and gum problems.