Onyx bolts

Onyx bolts are Rune bolts tipped with Onyx bolt tips. Onyx bolts can be created through the Fletching skill. A player must first have a Fletching level of 73 and take a cut Onyx and use a chisel with it to make 12 Onyx bolt tips. Attaching Onyx bolt tips also requires a Fletching level of 73. Once the Onyx bolt tips have been attached, the Rune bolts become Onyx bolts.

Onyx bolts can be enchanted through the spell Enchant Crossbow Bolt (Onyx) by a player with level 87 Magic. The spell enchants 10 Onyx bolts at a time, and once they are enchanted they become Enchanted onyx bolts and gain a special ability.