Hi and thanks for looking. This listing is for a handmade mosaic featuring celtic knotwork. I have been making mosaics for over 30 years and had a varied and interesting group of customers including ellesse, wade smith, guinness and manchester town hall.It measures 32.5 x 32.5 cm (more or less as the way i finish them off there can be a slight margin for error), and is on 12mm exterior grade plywood, using italian vitreous glass mosaic tessera, with a felt backing. This is a 100% handmade item, the tessera on the knotwork has been cut several times and set by hand taking many hours. This is only suitable for interior display, if you would like an exterior version, please message me and i will sort one out for you. I have fitted a mirror plate for hanging but you could remove it and use it as a pot stand, a massive coaster maybe or a table feature. This item is made of vitreous glass and tessera, grout.