Derwent Metallic pencils are a shimmering collection of highly reflective pencils that create vivid and striking effects. An hexagonal 6.9 mm diameter pencil with a metallic 3.4 mm strip. Natural metallic pigments reflect the light and work best on dark backgrounds, guaranteed to add sparkle to sketches and drawings. They can be used on their own or combined with other media to add brilliant definition and glowing highlights. A light water wash can be added for an interesting and unusual watercolour effect.