Art Deco wrought iron lamps with "Pate de verre" lampshade. This is a combination that is emblematic of the French decorative style during the Art Deco era, especially in the 1920s and 1930s. The different colors of the lampshade are achieved by sprinkling different oxides upon heating, which when reacted with the heated glass paste produce different colors. The more color nuances there are, the more expensive the production is.