You should be able to track that down via one of the gm online parts stores if it was a wheel offered for sale with the vehicle by Saturn.
Knowing the year(s) it was sold and on which Variants of the Vue will make your life much easier.

try

www.gmpartsdirect,co no "m" on the end --they explicitly list Saturn stuff.
Even though most of it has been discontinued, they still have the exploded diagrams and part numbers.

Biasa -- any insight?