Dark essence fragments are an item created by using dark essence blocks with a chisel, providing 8 crafting experience per block. Each block will create 4 pieces of essence, which are used to runecraft blood runes and soul runes. Players cannot hold more than 108 fragments at a time. The fragments cannot be stored in a bank.
Blood runes can be made at 77 Runecrafting and will provide 23.8 experience per dark essence fragment.
Soul runes can be made at 90 Runecrafting and will provide 29.7 experience per dark essence fragment.