The Rainbow Shell is a rare and vibrant multicolored seashell found on the beach during the summer season. Players can use it in various crafting recipes, as a gift to villagers, or sell it for a substantial amount of gold. It is also a key item in the "The Mysterious Qi" quest, where it is placed in the box at the train platform to initiate the questline, leading to further secrets and rewards.
The item ID for Rainbow Shell is 394
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. [394]
Spawning Using the Animal MethodTo spawn Rainbow Shell 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 [394] and you will receive the Rainbow Shell 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 Rainbow Shell while using a character, you will need to create a new character and name it with the item id with brackets like this [394]. You will then receive the Rainbow Shell 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.