Chemical Composition: Agate is a form of Chalcedony (silicon dioxide.) Hardness: 7
Agate is named after the river Achates in Greece, where it was discovered and named by Theophrastus in ancient times, in about the 3rd to 4th centuries BC. There are many varieties of agate that can be found throughout the world, some which exhibit beautiful colors, banding, and quartz-lined cavities.
Metaphysical Properties: Agate is a stone of balance, precision, perception and eliminates negativity.