Glass is a wonderful material, because it is a living material in continuous movement. It is changeable, just like Collier, the new lighting system designed by Marc Sadler for Italamp. The name Collier refers to a virtual collection of jewellery for an elegant lady. Aesthetically, the ob- jects can range from strictly minimal to hyper-decorative, bringing to mind necklaces, pendent earrings or broaches in a playful, symbolic way that expresses the system’s richness. Collier contorts and seduces in a structure enlivened by infinite variations of light and colours, with completely original forms. Conceived in a variety of compositions. Collier is suitable for residential settings, as well as commercial and hotel environments. A product with a complex allure that attracts and enchants, it is available in combinations that in- clude single vertical or horizontal elements, as well as table, floor and wall light versions. Collier easily finds its place and creates charming settings.