Sweet Gem Berry is a rare and valuable crop that can be grown from the seed of a rare seed. It takes all season to grow, and once harvested, it can be sold for a high price or given as a gift, which is highly appreciated by most villagers. Its mysterious allure also makes it a key item for a special quest, where it can be traded for a unique and valuable reward.
The item ID for Sweet Gem Berry is 417
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. [417]
Spawning Using the Animal MethodTo spawn Sweet Gem Berry 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 [417] and you will receive the Sweet Gem Berry 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 Sweet Gem Berry while using a character, you will need to create a new character and name it with the item id with brackets like this [417]. You will then receive the Sweet Gem Berry 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.