A collection of "jewel" lamps characterised by the combination of rectangular brass tubes and slanted cubes in engraved crystal, with two types of workmanship. The apparently random juxtaposition (hence the name "Mikado") in fact follows a precise and balanced scheme. The LED sources, inserted in the tubes so as to showcase the preciousness of the crystal, make Mikado a high-performance decorative product that is compatible with home automation systems.