yeah, I got a fren to rerender it, the Fresnel effect and reflections are too high that the whole thing is confusing, and it took me 3hr to render, so I'm not gonna do it myself...and he haven't completed rendering yet.
Er...Yafray is not designed for shiny things. It is designed for GI, really. And tyhe realism of shiny and transparent stuff is...erm...a...'side effect', due to GI photons for caustics. And also, Yafray use physical effects for materials (IOR affecting reflection is true in real life even in opaque stuff as it is actually the density of the 'material', dispersion power is another physical unit)