Promethium knife
Promethium knife is a tier 90 members main-hand weapon for Ranged. No shop sells Promethium knife and no monster drops it, so an Ironman makes it: it takes 94 Smithing and gives 92.5 Smithing XP, using Promethium bar.
MembersUntradeable
Updated . Sources from the RuneScape Wiki's drop, shop and recipe data (CC BY-NC-SA 3.0), checked 2026-10-09. Item sprite © Jagex.
Ironman verdict
Other sources include Icy Bones. Where the materials come from: Promethium bar (made with 90 Smithing). Making ten takes 10 × Promethium bar and gives 925 Smithing XP. Reaching level 94 Smithing takes 7,944,614 XP in total; the Smithing calculator counts the actions and materials to any target, and the Smithing guide has the Ironman training route. It is worn in the main-hand weapon slot at tier 90 as ranged gear; compare it with every other piece on the Main-hand weapons list. Promethium knife is members-only. It is untradeable, so every account, Ironman or not, gets it the same way.
At a glance
- Members
- Yes
- Tradeable
- No
- Monster drops
- None
- Shops
- None
- Recipes
- 1
- Used in
- Nothing
- Slot
- Main-hand weapons, tier 90
Make it yourself
Needs 94 Smithing · 92.5 Smithing XP
Getting the materials as an Ironman
- Promethium bar: made with 90 Smithing
Other sources
Minigames, reward chests, clues, skilling and other non-combat sources.
Where it fits for an Ironman
Equipment
- Main-hand weapons, tier 90 · ranged
Guides
Related items
Browse more items starting with P, or search every item.