“For this demo we will utilize Maya’s Blinn material, Ramp texture, and Sampler Info utility. We will also use Mental Ray’s Dielectric Material and new Mia_material. The user of this tutorial should note that I have also used Mental Ray as my renderer, with Final Gathering, Global Illumination, Caustics, and Image Based lighting used for optimal realism.”
http://www.3dtotal.com/team/Tutorials_3/realistic_glass/realistic_glass_01.php