I'm not sure what the material is, but it's lightweight. I found this while decluttering my grandmother's house. It's very old. Two of the plates have what looks like rust and are cloudy. There may be other damage as well. For those who understand. I'm also unsure how to use it. - Set includes: 5 plates, 5 perforated plates?, 2 spoons - Types of spoons: slotted spoon and regular spoon Thank you for looking.