Diamond bolts (e)

Enchanted diamond bolts are adamant bolts tipped with enchanted diamond. Diamond bolts can be enchanted through the spell Enchant Crossbow Bolt (Diamond) by a player with level 57 Magic. The spell enchants 10 diamond bolts at a time.

Enchanted diamond bolts have an Armour Piercing enchantment. This gives the bolts a chance of negating a sizable portion of their target's defence bonuses against ranged attacks.