Robert Sonneman Prairie Rings Desk Lamp Designer Robert Sonneman looked back to classic Mission lighting designs for this new desk lamp. The handsome profile base comes in a blackened steel finish and is paired with top and cylinder etched glass. Comes with an in-line cord dimmer for easy lighting control. Blackened steel finish. Takes one 60 watt bulb (not included). 21" high. 18" diameter top glass. 7" diameter base.