Cyanoacrylate glues (Krazy, Super, most others...) are completely safe. As long as the adhesive is cyanoacrylate, you're good. Keep in mind it dries white, so use sparingly and try to cover all the glue so its not an eyesore. I suggest practicing on a piece you don't care much about before gluing your favorites to get a feel for it
92% of all statistics are made up on the spot.