Fragment of mosaic glass bowl, representing one of the luxury goods most in demand in the 3rd to 1st centuries BCE and the 1st century CE.Salto de línea It was made using the technique of fusing and slumping over a mould, where a bundle of coloured rods (in this case, yellow, blue, green, red and orange), cut into small pieces like the tesselae of a mosaic, are fused by heat and shaped over a mould, forming a decorative repeating motif.Salto de línea