Highly pigmented and finely ground watercolors made by hand in the USA. Extra fine watercolors produce clean washes even layers and also possess superior lightfastness properties. 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. Interference pigments display a subtle sheen when used on white paper. Used on black paper or as a glaze over dark colors Interference Blue is a transparent and glimmering cool blue.