A crystallized ingredient is the version of elemental substances introduced with the Wrath of the Lich King expansion. These compare directly to Motes, which were introduced with The Burning Crusade expansion. They are used, either directly, or when combined into Eternal forms, in various tradeskill recipes. Unlike most Primal ingredients, Eternal ingredients can universally be converted back to their original components in the same fashion that enchanting essences can be converted from lesser to greater and back.