Exceptionally smooth, buttery consistency Offers excellent permanency and lightfastness No fillers, extenders, opacifiers, toner, or dyes added Ability to retain brush strokes or knife marks Largest assortment of unique pure pigments GOLDEN Iridescent Acrylics are one of the most unique products available to artists today. They offer highly reflective metallic variations when mixed with GOLDEN colors. The GOLDEN Iridescent colors achieve their reflective properties by synthetically reproducing several natural phenomena - the nacreous, or pearlescent, qualities found in fish scales or the dust of a butterfly's wing, and the shiny and reflective qualities found in certain metals and minerals.