Much of my ongoing experimentation is due to my desire to seriously manipulate color with transparent clay. Things of a prismatic or holographic nature are key. Or even better, opalescent or iridescent. Achieving something satisfactory keeps me trying. I have had wonderful success with mokume gane techniques, some have shown a remarkable illusion of depth. But I still haven't gotten something worthy as far as mega-sparkle. Not sure if I should be trying to do this through the clay itself, or through the glazing. Or maybe both?!!