Renaissance painters pioneered the sfumato technique—a way of blurring the lines between things, which enabled them to render the human face in more lifelike form as well as create rich atmospheric effects. Not bound just to the field of painting, we use it here to achieve exactly that sense of atmosphere. In our Sawyer family, we employ a sfumato glassblowing technique to impart a misty, smoky quality to the glass. Each original glass diffuser moves from opaque to transparent, its point of transition obscure.