Rune Essence Geyser

This strange material absorbs magical energy, causing it to defy gravity, among other things. It is best known for the creation of runes, powerful little stones that can be used to cast spells. A pickaxe is needed to harvest the essence. 

Rune Essence Geyser is a gathering node in RuneScape: Dragonwilds. Recorded regions include Ghornfell.