1970s Italian Alexandrite Glass Ashtray

Beautiful ashtray made of alexandrite / neodymium glass. Meaning: A substance has been added to the glass that absorbs the yellow light. In daylight or normal lighting the object is lilac / pink, in cold light (e.g. Fluorescent tubes and similar) the object is a violet to light blue colour. Beautiful piece from Italy in rare design language around 1970, very good workmanship. 14x14cm. 5cm high.