From that moment the control on glassmaking was determined by the Serenissima Republic so that the masters could not flee abroad and reveal its secrets.
Murano began to have a certain independence from Venice for the presence of furnaces and of their activities which made the island economically important, insomuch that soon became the capital of the world glass production.
Initially the glass production was limited to useful items such as bottles, jars, pots, etc., from the 15th century onwards the passage to the transparent white glass imitating the Crystal gave a chance to the production of the most precious objects and granted in Venice over two hundred years of artistic dominance.
It was founded in the late 19th century the Archaeological Museum of glass that you should visit.
The Glassmaking technique is passed on from father to son and remained confined to the island.
The master glassmaker was helped by two assistants: the server and the serventino who helped to support the long barrel in which the master blew to give the desired shape to the ball of red-hot glass .
A technique of blowing, where the Venetians are the most skilled craftsmen and were able over time to invent increasingly refined works such as the watermark.
Today there is a school of glass in Murano, the glass school Abate Zanetti (named by the founder of the first museum Glazier), which caters to those who want to dedicate themselves to this noble art.