The collection of glass includes around two hundred pieces, mostly purchased by Gian Giacomo Poldi Pezzoli himself. In the early 20th century directors and administrators of the museum continued to enrich the glass collection. The majority of the pieces are Murano glass dating from the 15th to the 19th century and antiques glass; furthermore, there are examples of North-central European works imitating glasswork from Venice (thus known as Façon de Venise), as well as glass from Germany and Bohemia. The collection embraces all the major types of glass and glass-making processes: coloured paste glass pieces that resemble semi-precious stones, transparent glass with fish-scale and dot decorations, 16th century crystal glass, frosted glass and Baroque pieces with elaborate and fantastic shapes.