A lighted display having a constantly changing image comprises a
transparent container holding an aqueous suspension of delaminate
vermiculite. A light source is positioned at a first surface of the
container so that the light shines through the container and the liquid
suspension within the container. First and second polarizer films are
placed on opposites of the container with the first polarizer film being
located between the light source and the liquid suspension and the second
polarizer film being located between the liquid suspension and the
observer with the films oriented so that the two axis of orientation are
not parallel to each other. Transmitted, polarized light passes through
and is modified by the plate-like particles in the suspension and is
observed as an image generated by the display. Stirring means are also
provided so the aqueous suspension is constantly in motion.