The Golden Bone was a giant golden bone that Jake had buried in their front lawn. It was dug up in the episode "Ocarina" by him and Finn as an attempt to buy Back the Tree Fort. Unfortunately, because the property currently belonged to Kim Kil Whan, Kim Kil Wan ended up taking it.
It appears to be a large, golden bone.
- This is the only piece of treasure that they hadn't put in their treasure room.