Medium enriched bone
Medium enriched bone
Release date 7 September 2017 (Update)
Members only? Yes
Quest item? No
Tradeable? No
Equipable? No
Stackable? No
High Alch 0 coins
Low Alch 0 coins
Destroy Drop
Store price Not sold
Weight 0.3 kg
This once fossilised bone is now bone again.
Medium enriched bone detail

Medium enriched bones are obtained by using medium fossils obtained from Fossil Island and depositing them into the mycelium pool. Players must add pyrophosphite and calcite along with the fossil to calcify it.

They are then used on the eastern strange machine inside the House on the Hill for 1,000 Prayer experience.


  • Upon release, the medium enriched bone only granted players 200 Prayer experience. This was increased to 1,000 in an update on 18 January 2018.