This vase is one of the most famous objects in the Museum as well as one of the most famous examples of cameo-glass vessel from antiquity. To make such vessels requires great skill and technical ability. This example was made by dipping the partially blown blue glass into molten white glass. The two were then blown together into the final form. After cooling, the white layer was cut away to form the design. The cutting was probably performed by a skilled gem-cutter.