This light is fabulous. Given that it was relatively inexpensive, I was unsure about the quality but I must say I am pleasantly surprised! The light was really easy to hang and the crystals are very high quality. I believe they are glass. One note of caution is when hanging the light and the crystals it would probably be best to wear gloves to prevent fingerprint marks on the silver finish inside the light. The light is also very bright and casts a very interesting pattern on the walls.