We looked for a good long time for sconces that were simple, modern and yet had a little deco in their DNA so that they wouldn't clash with our old bathroom (take note Joey! here's your answer). The answer to this mix of styles was the Motiv Sine Sconce, a sort of updated classic approach that we've see at Waterworks, Baker (new collections) and Anne Sacks. All of these three are still working with the concept of a classic New York style.
But, on to the sconces. We found the Motiv's through Simon's Harware, but also saw them at New York Replacement Parts. They come with handblown glass shades in polished chrome or satin nickel and run from $90 up to about $125, depending on where you look. Here's the google link.