If your painting lacks luster, try Jacquard Pearl Ex Metallic Colors. These pigments can be added into any viscous medium, varnish, glue or paste to achieve a pearlescent or metallic effect. Add to any “tacky” surface to achieve similar effects. Particle size 10 to 60 microns. Pigments are colorfast, temperature resistant, weather resistant and non-tarnishing. Available in 0.75 oz and 4 oz bottles.