Diamond bolts (e)

Enchanted diamond bolts are adamant bolts tipped with enchanted diamond. Diamond bolts can be enchanted by using the spell Enchant Crossbow Bolt (Diamond) by a player with 57 Magic. The spell enchants 10 diamond bolts per cast and uses 2 law runes, 1 cosmic rune, and 10 earth runes.

Enchanted diamond bolts have a chance of triggering the Armour Piercing effect. This increases the max hit (and thus damage) by 15% and ignores your opponent's Defence and your own accuracy for the hit it activates on, making it always hit. A tinkling sound can be heard when this activates.

If the player has completed the hard Kandarin Diary, there is a 10% increase of the likelihood that the special effect of an enchanted bolt will occur, giving enchanted diamond bolts an overall 11% chance of the special effect activating. This effect is always active regardless of whether the headgear is equipped or not.