Bowl; Murano, 20s. Blown glass mounted on silver-plated metal. Measurements: 23,5 x 24,5 cm. Vase in blown glass and colored in blue. The piece has a bell-shaped structure decorated with overlapping glass grid in green. The piece is mounted on a silver-plated metal base. The high value of Murano glass is explained by the artisanal and secret process of its manufacturers. Made on the Italian island of Murano, this glass has special properties and offers colors and shapes unlike any other glass. The history of Murano glass manufacturing dates back to the 8th century. By the 12th century Venice had become extremely popular for its fine glass. To keep the glassmaking business unique and profitable, a law was passed in 1271 stating that no foreign glass could be imported for manufacturing and no foreign glass workers could be hired. However, in the 13th century all glassmaking furnaces were moved by law from Venice to Murano, because the fires there posed a great risk to the wooden structures of Venice. In combination, these two laws ensure that Murano glass is unique even today; created by artists and craftsmen from a small group of islands in Italy. The secrets of glassmaking have been passed down from father to son and from master to apprentice.