Attached Link: Crystal ball thread

Ok, found my mistake was using the "crystal" material from the standard Poser material library. The forum article I was thinking of was for a crystal ball but there are some interesting comments from BB about IOR. Using this glass material I had more wine colour extending down the stem but could not reproduce the band effect.  Thought this was an issue to do with mesh shape but as said above I can get the effect in other render engines with the same mesh so don't know now.