The Nautilus Fossil is a rare artifact that can be discovered by digging up artifact spots or fishing treasure chests. Once found, it can be donated to the local museum to contribute to the collection and earn rewards. Additionally, it may be requested by villagers for various quests, providing an opportunity to increase the player's relationship with them. Its unique spiraled shell design makes it a sought-after item among collectors and enthusiasts within the community.
The item ID for Nautilus Fossil is 586
This ID will work on PC/Mac (Steam), PS4, PS5, XBOX One, and Nintendo Switch.
Spawning items in Stardew Valley is a little unsual and is not done with commands. You will need to utilize what is called a cheat to set your character's or animal name to the item id. To do this you cannot use just the item id, you will need to surround the item id with brackets. Ex. [586]
Spawning Using the Animal MethodTo spawn Nautilus Fossil while using an animal, you will need to head over to Marine's Ranch and purchase an animal. Once you have have an animal chosen, name the animal with the item id with brackets like this [586] and you will receive the Nautilus Fossil item. This method can be done using an existing character and is convenient but will cost some gold every time you want an item.
Spawning Using the Character MethodTo spawn Nautilus Fossil while using a character, you will need to create a new character and name it with the item id with brackets like this [586]. You will then receive the Nautilus Fossil item when you speak to a villager. This method is easy and free but cannot be performed on an existing character and you will be stuck with that name unless its edited.