Even so, glassworkers emigrated illegally to locations throughout Italy and Europe and began to compete with Murano, producing the same wares and using the same methods.
Vaatamata kõigele sellele emigreerus klaasimeistreid ikkagi nii teistesse paikadesse Itaalias kui ka mujale Euroopasse ning need paigad hakkasid Muranoga konkureerima, tootes samasuguseid klaasnõusid ning kasutades samasuguseid klaasnõude valmistamise meetodeid.