The Pallante Center can research death and burial records in Italy, and get photos of tombstones. They usually have a picture of the ancestor ! But even if there is no stone existing, the cemetery office in your ancestral village may have burial information, which could include the names of parents and spouse, that you can match to a known date of birth.
Also, if when your immigrant ancestor left Italy, there was property left behind that he/she either owned, or had inheritance rights to, which was never transferred, there may still be unclaimed properties existing in their names. A search can be done to find out if you may be able to reclaim your ancestors’ property according to Italian succession law.