Here's a hi-quality 3d model inspired by the famous Tolomeo light, designed by Michele De Lucchi and Giancarlo Fassina in 1986 for the italian Artemide company. (https://en.wikipedia.org/wiki/Tolomeo_desk_lamp)

The model has proper real world scale and is ready to use for your visualization.

Materials are original and procedural, and textures are packed in the .blend file. Some are taken from the free section of www.poliigon.com. Set up the color of the lamp by editing the "main-color" material.

You can easily set the shape of the lamp by rotating each element along local axes (cables will adapt; detailed description inside the file).

FILES: .blend and .fbx