Very powerful, unshielded luminaires in four sizes for incandescent and fluorescent lamps. Luminaires with a light output of up to 18000 lumen. Its noticeable shape is characterized by a large three layered opal glass. A very thin opal layer is enclosed between two crystal glass layers. This produces a highly translucent but opaque glass that distributes the light very uniformly. This is very specially enhanced by the large surface of the luminaire glass. Robust and reliable lighting implements that provide perfect light over long periods of operation. Due to the perfectly proportioned and impressive luminaire glasses the luminaires perform to long-lasting aesthetic elements of interior design.