Energy stones can be big or small, and they are definitely precious. They have many uses. For one, they can be used as a currency when trading, since they also have a monetary value when bought. The energy stones can also be used to increase one's spiritual strength by absorbing its energy. After the energy stored in the energy stone was absorbed, the stone will crumble and turn to dust.
However, there are also another kind of energy stone. They have other specific uses, such as healing, or if in offensive, can harm other beings. One example is the piece of the rock that they have found.
