Stunning! Glow in the Dark Mask of mixed media of Swarovski Crystals, Polymer Clay, Resin pigments of glow in the dark effects in a Dark Navy Blue background. If you love something dramatic and one-of-a-kind art, this is it. Mask is made of polymer clay. This won in the 2022 Delta Arts Festival First Prize for my building. Measures 16" x 20" on Level 3 Canvas. Best not to place in direct sun light, but in a lighted room, the pigments will charge with the given light and glow.