Emerald bolts can be created through the Fletchingskill. A player must first have a Fletching level of 58 and take a cut emerald and use a chisel with it to make 12 emerald bolt tips. The emerald bolt tips can then be attached to mithril bolts to make emerald bolts. Attaching 10 emerald bolt tips to 10 mithril bolts grants 55 Fletching experience.
Emerald bolts can be enchanted through the spell Enchant Crossbow Bolt (Emerald) by a player with level 27 Magic. The spell enchants 10 emerald bolts at a time, and once they are enchanted they become emerald bolts (e) and gain a special ability; Magical poison. Upon activation of this enchantment the target is poisoned for 4% weapon damage. Abilities or auto-attacks trigger it.