Each one is a unique designer object, a true example of the art of blown glass.‎ The glass is blown in an open mould consisting of steel strips.‎ The molten glass is blown through the strips at different intensities resulting in a vase that is slightly, albeit visibly different each time.‎ The milk white finish of the Marianne vase is obtained by combining a layer of white glass with the transparent glass in the crucible.‎