These carefully crafted stones are engraved with Tsui Reiki Symbols and comes in a variety of Natural Black Agate, Rose Quartz or Rock Quartz Crystal. They are perfect for reiki healing, meditation and chakra balancing. The engraved Usui Reiki symbols are: Cho Ku Ray (Power), Sei Hei Ki (Purification & Harmony), Hon Sha Ze Sho Nen (Connection), and Dai Ko Myo (Empowerment & Enlightenment).