Ammonite

Ammonite is a valuable item in Core Keeper. It is listed among the game’s collectible valuables and has official concept art, indicating it is part of the game’s item set even though no further in-game details are provided in the available sources.

As a valuable item, Ammonite is primarily notable for its value rather than for crafting or combat use. No additional effects, acquisition methods, or interactions are given in the source material.