Agate has the same chemical composition as quartz but instead of forming whole crystals, it has a microcrystalline structure. To be a true “agate,” the stone must exhibit a pattern or banding, otherwise it is considered chalcedony. Different varieties of agate include moss, tree, and lace. Much agate comes from Brazil where it is sometimes dyed vibrant colors. Other sources for beautiful agates include Oregon, Mexico, Botswana, and South Africa. Metaphysically, agate helps with emotional, physical, and intellectual balance.