the lighting in my classroom at 6:45am...not so great. it's not totally clear from these images, but with my naked eye it appears that my gold has virtually disappeared. does tumbling force the gold into the surface of the silver, like it's absorbed? i will try another layer on one of the pieces as it is and then if (when) it doesn't work, i'll toss everything back in the kiln to get it to white, reapply the gold, heat and burnish and then ONLY brass brush it, rather than tumbling... sound good? anyone?