Lustrous energy

Lustrous energy is a type of energy associated with the Divination skill. It can be collected from Lustrous wisps, located east of the Slayer Tower, at level 70 of Divination. Each normal harvest gives 8 Divination experience. The enriched version gives 16 experience. Lustrous memories can be converted to Lustrous energy for 1 experience, with the exact amount of energy per memory depending on your Divination level. One lustrous memory and 5 lustrous energy can be converted for 40 experience, while one enriched lustrous memory and 10 energy can be converted for 80 experience.

Transmutation
Lustrous energy