These are heavy Holophane pendants. The glass is a half inch thick and it has a 15.25 inch diameter. The mounting plate is as clean and simple as it gets so all you see is this beautiful prismatic glass. We love Holophane lamps because of the wonderful light they project. The glass is all prismatic and designed to get the most out of a bulb. They are impressive and have a dramatic look. Each Measure 12 inches tall plus whatever length pipe or chain is required. We have a good collection of these priced per lamp. These heavy shades are over 60+ years old and may have a little nick here and there in the glass... but nothing really important. This way you can buy just one or the collection.