Transparant yellow plastics over a perforated black aluminum tube, which gives a beautiful warm and intriguing light.  This lamp is documented as the 'Orbiter' or 'Sphere' pendant. One of the first lamps by RAAK Amsterdam with the use of colored plastics. A very nice item that still is in a very good condition considering age. The tripod that holds the yellow sphere has been made new by a former owner, the rest is all original RAAK.