I agree that the safest option will be to either repair the original ceramic tube or get a new one made. Tell me more about what happened to your stove so I can help you. Also, you can
look here for a specialist who can help you to fix it. My friend recently became an electrical inspector, and from his words, I realized that the range of their work is large. And undoubtedly it became much more interesting for him to work than like an ordinary electrician. And if you decide to fix it by yourself, firstly consult at least with a specialist or watch training videos on Youtube. Be careful not to get hurt and break something. Good luck!