Italian Smalti by the famous Dona of Spilimbergo. They are made using the original recipe from Murano in Italy, which has been passed down from generation to generation. They are an artisanal handmade hand cut product used to create undulating handmade glass tesserae. When using the indirect method may be left ungrouted. UVA and frost resistant; cut using wheeled nippers. Each piece is approximately 20x10x6mm, 12-14kg per square meter.