The Bic Biro Chandelier was made by Spanish design company enPieza Studio. This is not their first light made from recycled pens. They have created a table lamp named the Volivik 50 from various color Bic pens and the Volivik 77 pendant light from orange pens.
The chandelier reminds me some of the chandelier made from plastic coffee stirrers that I mentioned a while ago on KitchAnn Style. The pens in the close up view also seem to be full of ink so I am not sure they were not purchased solely to make the lights.