Entimus imperialis can reach a length of about . The basic colour is black. Elytra are strongly convex and laterally compressed, punctured with longitudinal rows of golden-green dots, filled with scales composed by crystals of chitin and resembling little diamonds (hence the common name). Diamond beetles are also used for ladies' jewelry. The scales of
Entimus imperialis appears iridescent (i.e., exhibit colour changes with viewing angle) because of the presence of three-dimensional
photonic crystals. This characteristics is probably used as a camouflage and to facilitate intersexual recognition. File:Scales covering Entimus imperialis' elytra.jpg|Iridescent scales on
Entimus imperialis File:Entimus imperialis' photonic crystal.jpg|Electron micrograph of the three-dimensional
photonic crystals within the scales on
Entimus imperialis ==Distribution==