Model converted from Inventor and rendered in Maya with Mental Ray using Mia materials. No lights, just 2 maps, one for FG and one for reflections, using envblur and rayswitch. it's an experimental lighting technique, a bit unconventional, but i tried so spparate the diffuse and reflective component of the materials using very blurred 300px HDRI maps with a simple gradient of colours and one radial gradient for the main light source which goes well beyond the value of 1, to generate realistic light intensities.