Gold Kinstone

Gold Kinstones are the rarest Kinstones (there are only ten of them in the whole game) and the only type that cannot be found in the overworld or bought; they are only found and used as a required game plot. Castor Wilds, Cloud Tops, and Veil Falls are the only regions that require these Kinstones, used to open various pathways necessary for Link to proceed along on his journey. This Kinstone cannot be fused with a Kinstone from a non-player character like the other three can, just because they funtion as specialized keystones in specific location