They are a mixture of materials. I think most of these are some type metal. I Think there is some shell, mother of pearl and plastic.Wish I could be more specific but I am not good at identifying materials. Thanks for interest. God Bless.
The cost is the same as if you were shipping inside the USA cause Puerto Rico is part of it. If anything you can Google the info or cal the P.O. So fanning you & watching. ^_^
If it says you have enough credits, you should be able to bid. If you have enough credits but can't bid, You need to contact Listia member support located at bottom of page. God Bless.