Considering he's half human he could technically survive without the gem it just be a lot more draining for him, but at the same time the child could take on the human have of him so he can still keep his gem, but I actually wanna know that now
Considering he's half human he could technically survive without the gem it just be a lot more draining for him, but at the same time the child could take on the human have of him so he can still keep his gem, but I actually wanna know that now