I rendered this image in Blender (a free 3D modelling, rendering, animation, and game engine program from www.blender.org). I'm still learning Blender so it was a learning process for me.
It was a straightforward process: I just added "Text", adjusted the "Extrude" setting, applied a Bevel Depth and BevResol, then added a Gold Voronoi material texture. (The material I found on the Blender Open Material Repository.) Although, I did adjust the material settings slightly to make the texture more coarse and "bumpy".
This is licensed under CC BY 2.0, so you may use it in whatever project as long as the license is followed. Basically, just give me some credit and, when possible, link to this page.