Hi, Vicky. The issue is not whether we would like to help but rather if we can. I don't know how to cut a hole in ceramic block but I would guess that a diamond blade is necessary. Beyond that, I have no idea what the strength and characteristics of the material are. So rather than give you bad information, I think that it is better to say nothing.
I think that most of the posters feel the same way. If we feel qualified to answer a question, we answer it. Believe me, it is not that your posts are not considered, it is only that we don't know the answer or even where to tell you to go tto get the answer. The best that I can suggest is that you talk to local people who might have some experience with your ceramic block and can see the structure.