Well. I always set the max ray depth to between 8 and 10 depending on how patient I am feeling with renders.  In this case, it is set to 8.  The object isn't a vertex object, just a simple spline object.  I normally try to use only spline objects for items I am selling for two reasons.  First, they make it easier for a buyer to modify the model if he wants to, and second, the vertex room gives me a migraine.. :)  I think we may have found a bug.  Whether or not it is a new one, only DAZ knows.  I am going to try and remake the object and see if it works any better.  The thing is that I have done this before and never had this issue.  Weird.