Murano Glass Work Techniques:

Aventurine

Aventurine

Aventurine (or aventurina according to the Venetian spelling) is a type of glass produced for the first time around 1542. It is obtained by a method which consists in adding after the fusion a certain amount of copper . The small particles appear like gold in the light and are used in both blown Venetian glass and particularly in Venetian beads.

Battuto

Battuto

It consists in smoothing the surface of the glass through a grindstone producing small, irregular and adjacent scales running in the same direction and achieving a sort of wrought iron effect.

Bulicante

Bulicante

Thick type of glass consisting of various tiny bubbles layers. It is obtained by introducing the glass into a mold covered with tips which create small holes on the molten glass surface, small holes are then covered with a further glass layer thus turning into tiny bubbles. This technique was developed by Flavio Poli and Archimede Seguso in the late '30s.

Calcedonio

Calcedonio

Glass made by mixing different colored metals in order to imitate stones such as agate, chalcedony, onyx, malachite and lapis lazuli. This technique was developed in Venice in the late fifteenth century and it was rediscovered in the late nineteenth century by Lorenzo Radi.

Crystal

Crystal

Designates a type of glass very transparent and reflective, obtained through the use of lead silicate. It is also called "lead glass" and was improved in Great Britain, France and Bohemia (made from silica, calcium and potassium) in the late seventeenth century. By extension the term "cristallo" is applied to any kind of pure and transparent glass, very famous is the Veneziano crystal.

Filigrana

Filigrana

Ancient tecnique used since 16th century that begins with canes of coloured glass prepared on a tray in exact intervals. The glass blower blows a bubble which he elongates to fit the length of the canes and carefully rolls the bubble over the canes. Reheating the canes to melt into the bubble the glassblower twists the bubble while blowing to give a swirl in the colored lines which results in a diamond like shape between the intersections when viewed from the side. In 1950s and 1960s Archimed Seguso realized same work of arts in filigree adopting a particular technique of preparation and grinding of the glass rods.

Gold/Silver Leaf

Gold/Silver Leaf

24Kt thin gold foil usually in the size of cm. 8x8 embedded in melting glass and then covered with another transparent glass layer . If the glass is blown, gold foils often turn into a sort of gold powder. Since 19th century also the silver foil is used for the same kind of decoration.

Incalmo

Incalmo

Technique in which two or more hot glass elements in different colours are perfectly matched together in order to obtain desired shapes. This procedure requires great manual ability. Famous are the double Incalmo vases, presented in 1962 by Venini at the Biennale, and the "HatDoge" designed by Thomas Stern.

klè

klè

A technique in which the glass paste is rolled on a yellow gold leaf first and on a white gold leaf later. Then it is sprinkled with aventurine and covered with a transparent crystal.

Lattimo

Lattimo

Kind of white glass close to the porcelain. Is obtained matting the glass with tin oxide. The milk glass was used in the 1600 and 1700 as an imitation of Chinese porcelain, especially for items decorated with enamels. Its use was re-discovered by Barovier & Toso and MVM Cappellin glass factories at the beginning of the 20th century and in the fifties Fulvio Bianconi used it to create the famous figures of the series "Commedia dell'Arte" for Venini.

Murrina

Murrina

technique dating back to Roman times, fallen into disuse and achieving success in the the nineteenth century with the objects of Artists Barovier. The realization technique consists in the preparation of a bundle of glass rods multicolored arranged in order to obtain the predetermined pattern. Then it is possible to proceed to the fusion and cut into small discs. The discs are placed on a metal plate to obtain the desired design, they are heated and then made to adhere on an artifact of cylindrical shape attached to the blow pipe.

Zanfirico

Zanfirico

A technique similar to that of the "murrina". It consists of fine filigree canes which have been stretched and twisted to form beautiful lattice patterns. Zanfirico is the modern term used to to call the glass "a retorti".

Opalino

Opalino

si ottiene sovrapponendo "incamiciando" il vetro lattimo con un vetro o più vetri sottili trasparenti e/o colorati, ottenendo oggetti artistici dai colori intensi e accesi

Vetro Acidato

Vetro Acidato

Decorazione consistente in un'apparente crepatura della parete esterna di vetri soffiati, ottenuta immergendoli in acqua nel corso della lavorazione. La reazione che ne deriva, sorta di "raggrinzimento", produce appunto un effetto "a ghiaccio". Tale lavorazione è nota almeno dal XVIII secolo.

Sbruffi

Sbruffi

Si tratta di un "soffiata" di vetro molto sottile e di norma colorato che viene usato successivamente in sottili lamelle o scaglie per decorazione a caldo di oggetti vari.

Vetro Madreperla

Vetro Madreperla

è prodotto miscelando piccole scaglie di mica alla massa vetrosa.

Vetro Ghiaccio

Vetro Ghiaccio

Decorazione consistente in un'apparente crepatura della parete esterna di vetri soffiati, ottenuta immergendoli in acqua nel corso della lavorazione. La reazione che ne deriva, sorta di "raggrinzimento", produce appunto un effetto "a ghiaccio". Tale lavorazione è nota almeno dal XVIII secolo.

Vetro Molatura

Vetro Molatura

Questa lavorazione viene effettuata su pezzi precedentemente sezionati e serve a eliminare la parte tagliente del vetro. Con questo procedimento il vetro acquisisce una migliore finitura del bordo e degli spigoli dando al pezzo stesso una maggiore resistenza meccanica.