Our Luminescent watercolors, unlike anything ever seen in watercolor, simulate the glitter of a watery surface or the luster of mother-of-pearl. They're made from mica pigment, thin transparent particles coated with highly reflective metal oxides. Iridescent colors reflect light and their semi-transparent quality adds a fascinating sense of depth to your work. Iridescent Sapphire is a shadowy neutral from one angle that bursts into a brilliant metallic violet when the light hits it from another. Iridescent Sapphire, a subtle, silvery blue-gray on white, pops and sparkles when applied over black paper or dark colors. It has a cool elegance and mixes beautifully with other colors.