One of the 4 basic elemental runes
Earth runes are one of four basic elemental runes used in many spells like stun, weaken and teleportation. Earth runes are the product of using pure essence on the Earth altar using runecrafting, located near the Lumberyard. They can be obtained from pickpocketing wizards, killing magic wielding npc's, brought from a rune store or stolen from a rune stall.