Agate is named after the Achates River in Sicily due to its waters being an ancient source of this beautiful gemstone. Scientifically, agate is a banded form of quartz crystal that is formed in layers as volcanic lava cools. Spiritually, agate is said to provide balance to our emotional, intellectual and even physical energies. Agate is also a source of protection, strength and harmony. Agate can be found on several continents in countries such as Brazil, Australia, Mexico, Argentina and even the United States.