Can I install stone over my brick fireplace

can i install stone over my brick fireplace
Like a façade? You should be able to, if the bricks are cleaned and free of dirt or soot, and the bricks are in good repair: not loose or cracking. Consult whoever you plan to purchase the stone from as to what type adhesive is best for this application.

Read up on it and get more than one opinion.

This is a big task and you'll likely be looking at the results for a while. Make yourself proud!