Most Tiffany style lamps on the market come with bases made of poly rezin. Some high-end styles use bronze bases made of zink alloy. Other than their various designs, these bases are in general comparable in quality among the vendors. The value of a Tiffany lamp mainly comes from its shade. Fortunately, you will be able to judge the quality of a lampshade using your own eyes and hands. Two things you need to look at—glass and solder.
