Fire runes require level 14 RuneCrafting to make. The fire temple is found north of the Al-Kharid Duel Arena. For modern magic, fire spells are the most powerful. Fire runes are used in Alchemy, and enchanting ruby jewelry. Fire runes are dropped by a wide range of NPC's; predominantly Lesser Demons, Greater Demons, Fire Giants. Fire runes spawn in the Al-Kharid mining chasm, inside Karamja Volcano, and the Dark Knights' Fortress.