I am a big fan of Artemide... I was flipping through their website and spotted this,.. Wow!
Mercury A ceiling fixture that places a floating assembly of large pebbles below a simple modern aluminum disc. These in turn reflect each other bouncing light between their taught bio-morphic surfaces and reflecting the environment around them. During the day, the piece acts as a sculptural object reflecting the dynamics of natural light and the movement of people around them. Material: die-cast aluminum lighting unit and reflector; reflective units made of injection-moulded thermoplastic material with metallic finish. Available in: Ceiling Lamp, Suspension Lamp Designer: Ross Lovegrove