Lumenite is a very hard material that was used for building Lumenaria (which is the origin of its name) when the Ancient Councillors built it. It does not burn, even with Everblaze, so it is also used for bottling said substance when necessary. It is a mineral that glows with a white glow.
- In Candleshade, Keefe says there is a giant statue of his father, Lord Cassius, made of Lumenite that gave him nightmares about it coming to life and eating him.
- Fintan Pyren was once held in a Lumenite prison for a short period of time due to its resistance to flame.
- Sophie bottled Everblaze in Book 1: Keeper of the Lost Cities with Lumenite and gold to show Alden and the Councillors that the white-hot, sweet-smelling fires were actually Everblaze.
- It is used in Team Valiant's Regent crowns.
“Do you know he has an entire room dedicated to himself, complete with a life-size statue made of Lumenite? It glows, guys. I’m going to have nightmares about it.”