This oil lamp is made of a good quality glass. It has a ring of ribs and a ring of beads each on the base and font. The lamp stands 8 3/4" to the top of the double ribbed collar and the burner is a queen anne #1. The Rib and Bead Rings lamp is pictured in Katherine Thuro's Oil Lamps book on page 289. It is in very good condition free of chips or cracks.