Those are called headpins. You can get inexpensive (not high quality) ones at Michaels or other craft store. If you want to make higher quality jewelry, I recommend one of these online sites to get your findings: www.artbeads.com www.fusionbeads.com ...
I have no idea. Try asking the local jewlers, they may have seen the pendants and know who you are talking about. Good luck.
Betsey Johnson Heatherette Marc Jacobs Rebecca Taylor =]