Glassway - vetro verre glass
italiano · fran├žais · english
Home Events Project Partners Links
search   
MOSAIC Home Artistic Glass and Glass Handicraft Techniques Mosaic
Glass
Artistic Glass and Glass Handicraft
The history of glass
Techniques
Acid Cutting
Hollow Ware Applications
Applied Filaments
Festooned Thread Applications
Applied Broken Threads
Applied Blobs
Applied Splinters
Cameo Glass
Rode
Casting
Staining
Lost Wax Process
Corrosion
Transfer Printing
Half Filigree
Reticella Filigree
Twisted ('A retortoli') Filigree
Gold (and Silver) Leaf on Hot Glass
Gold-Leaf Engraved
Fusing
Ice Glass
Graal
Incalmo
Overlay
Diamond Point Engraving
Roller Engraving
Lampworking
Lampblowing
Half Moulding
Millefiori
Mosaic
Nipped Diamond-Wise
Core-Forming
Lost-Wax Process
Enamel Painting
Mould Pressing
Sand-Blasting
Slumping
Blowing
Mould-Blowing
Overlaying
Mosaic Glass
Industrial Glass
Glass and Environment
Museums
Site Map

MOSAIC

by Rosa Barovier Mentasti
The glass tessera are the primary material of late-Roman and early Christian mosaics from the 4th century. The mosaicist's work is based on cutting tessera from slabs provided by glassworks. The preparation technique, which is simple, is not fundamental: what is important is the ability of the composer to obtain a wide chromatic range of opaque glass.
Fused glass is poured from a crucible onto a metal surface and flattened in the shape of a round plate. In the case of gold or silver leaf mosaic, the metal leaf is laid on the plate, then a square, cut from blown glass, is laid on the surface. When the plate is placed in the furnace, the thin glass drips and adheres to the leaf and protects it.
zoom
zoom
zoom
The plate is then cold-cut and the tessera are used b the mosaicist in his compositions.
The Ravenna and Venetian mosaic styles should be mentioned. In the first one, which is very old, the tessera are placed directly on the cement of the brickwork wall, thereby producing an irregular movement of the tessera and a vivacious multi-light effect.
In the Venetian style, which dates from the 19th century, the tessera are glued onto cardboard, then applied on the other side of the wall. The surface is flat.
Millefiori 29 30 31 32 33 Nipped Diamond-Wise
HomeEventsProjectPartnersLinks
© 2021 Regione Autonoma Valle d'Aosta - c.f. 80002270074 - Credits