Copper mounts, with chain and ceiling cap.
A similar tulip motif appears on a table lamp by R. Wilkinson Lamp Company (Brooklyn, New York, 1907-15), P. Crist, Mosaic Shades II, p. 266.
Width 5 Depth 5 Height 7 inches
Chain: Height 54 inches
American Arts and Crafts Leaded Stained Glass Tulip Pattern Pendant One-Light Hall Light