Lamp most certainly of the Belgian designer Willy Daro, in gilded bronze enclosing an amethyst, base in black marble, of period 1970s XXème century.
This lamp is in very good condition and is of high quality. It is not signed. Electricity is working. This lamp is adjustable in height.
Remember: minute traces of oxidation in the bottom of the bronze, tiny scratches on the base, wear time, see photos.