Agate
Agate is a type of gemstone that is made up of microcrystalline quartz. It is known for its beautiful, banded patterns and comes in a wide range of colors, including white, black, brown, red, pink, and many others.
Agates are believed to have a number of beneficial properties, including the ability to balance yin and yang energies, and to improve focus and concentration. They are also sometimes used to promote feelings of stability and security.