Experimenting with glass...

I decided to do a little experiment with small glass flat marbles and clay.  Check out the before and after.  I  think the blue coloring came from a small amount of baby blue underglaze I had painted on the clay.  Next time I will make the channels bigger so that there isn't so much spillage.  Thank goodness I had a ton of kiln wash on the kiln shelf because it made cleanup of the melted glass a breeze!