and you get the notion to sell an old Tiffany lamp. You know the kind: warmly lit, gem-colored stained glass; copper-foiled into a lampshade inspired by the wonders of nature and geometry ...

The Wisteria Table Lamp (Clara Driscoll - Tiffany Studios, c.1905) has a cylindrical shade topped by a dome, so it is a geometric form. But the bottom of the shade has an irregular edge ...