Agate is a compact form of chalcedony (cryptocrystalline quartz) characterized by its distinct, parallel bands of different colours and patterns. The stone forms in cavities in volcanic rocks and is found in many places, including Sweden, Brazil and India.
Agate is often used in jewelry because of its moderate hardness and comes in many varieties, such as moss agate and band agate, and is believed to have calming and balancing properties and can be worn as a talisman for protection against evil