The traditional stained glass is an assembly of glass pieces of different colours and textures. The patterns are made by this composition of shapes and colours, but also by paint work with grisails, enamels, which allow a greater finesse of the drawings, of the plays of additional gloss and matte. Just like a painter before his palette, the glassblower draws, colours in different successive steps:
feature, patterned, enamels. Firing allows each step to fix forever the patterns on the glass.