They can be fletched by attaching adamant javelin heads to javelin shafts at level 62 Fletching, granting 150 experience per 15 javelins made. They can also be obtained by buying them from the Ranging Guild, the Void Knight Archery Store or from Oobapohk's Javelin Store after Monkey Madness II.
Monster Combat level Quantity Rarity Black dragon 227 30 Bronze dragon 131; 143 30 Rare drop table Varies 20
- Before the release of Monkey Madness II, adamant javelins were equippable in the Weapon slot, providing a Ranged Attack of +24 and a Ranged Strength of +28.
- On 31 October 2016, the adamant javelin's Ranged Strength bonus was changed from +125 to +107.