okay, just the cross without the ring and dangles is 2.5" tall and 2" wide. From the top of the hanging ring to the bottom of the longest dangle is 4.5" tall and 2.5" wide. Good news, I found the stand for it which is 7.25" tall. I posted a pic of the cross on the stand. thanks for your interest.
I'm not sure. Could be brass but I really have no idea. It's not plastic its a metal of some sort. Its just not specified on the cross. Sorry about that.