Tempered glass with a snowflake pattern. I found this at my parents' house. It's new and unopened. I'm not sure what it's for, but I think it's probably a trivet. However, it's apparently not heat-resistant glass, so sudden temperature changes are a no-go. *I'm sorry, I don't know the exact purpose, so please use it at your own risk (> <;)* Please purchase only if you understand that this has been stored by a private individual. It will be shipped via Yu-Packet Post. Please be aware of this as well.