So I totally forgot to take a picture before boxing them up, but my sister asked me if I could make her some round displays for her stone egg collection.
I was digging around to see if the feature where you can fake what it would look like, but it seems to have gone the way of the dodo. I literally never used it so that seems reasonable, but today it would have helped
If you have an Aura or Spark (or one of the newest Performance machines) and you click on the eye icon just under the material list, it will change the background to the actual material if you have chosen a Proofgrade material.