Rare fossilised ribs

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Rare fossilised ribs
Rare fossilised ribs.png
Released7 September 2017 (Update)
Quest itemNo
ExamineThis set of fossilised ribs belongs in a museum!
Value1 coin
High alch0 coins
Low alch0 coins
Weight0.907 kg
Advanced data
Item ID21614
Rare fossilised ribs detail.png

Rare fossilised ribs are fossils that can be obtained by cleaning an unidentified rare fossil on the fossil cleaning bench east of the Museum Camp on Fossil Island.

Uses[edit | edit source]

They can be used at the mycelium pool to be calcified into a rare enriched bone via a chemical process that uses pyrophosphite and calcite. Whilst the reaction is happening in the pool, players must add additional pyrophosphite and calcite to maintain the chemical process, and pop bobbing fossils that surface around the pool, otherwise the fossils will become too exposed to air and dissolve. Once completed, players can open the sluice gate behind the Ancient Shroom, and check the rinsing pool to obtain the enriched bones. They are then used on the easternmost strange machine in the House on the Hill for 2,500 Prayer experience.

Also, they can be traded to the Fossil Collector in exchange for 500 numulites.