This looks a bit like polymer clay's answer to dichroic glass.  Whether it is or not, I've got to try it!  8-)

From Polymer Clay Polyzine, way back in 2004, they're peeling the the shiny, holograph-y layer of a CD off and adhering it to polymer clay.  Wild, no?  It's not like there's a shortage of used CDs or DVDs here'bouts.

http://www.pcpolyzine.com/2004april/barettetute.htm

(via)