The listing, Plastic "diamond" ring. has ended.
This is made from probably a mix of aluminum and plastic, but fairely strong plastic. Not the cheap easily breakable pure plastic or the smashable and bendable pure aluminum. It's much better quality than those 25 cent machine rings, no, this is dollar store quality. Actually, better than that, it's probably worth $2!!! Of you drop it, it won't break , if you step on it, it probably will. Unless you are not wearing shoes, in which case the ring will be fine, your foot won't. But at least the ring will still be ok. The "diamond" is a rhinestone or something, only an idiot would think it was real. It's a size 8 or 9.