Hanging lamp "ball" made of blown glass in white designed by Michele De Lucchi and Huub Ubens by Artemide company. It is available in four different sizes (D14-25-35-42) allowing several combinations and you can also find wall lamp, ceiling lamp and floor lamp version.
Dimension D14cm:
Lamp type: G9 1x60W max (halogen-economy)

Dimension D25cm:
Lamp type: E27 1*100W max (Incandescent-economy)

Dimension D35cm:
Lamp type: E27 1*150W max (Incandescent-economy)

Dimension D42cm:
Lamp type: E27 1*200W max (Incandescent-economy)