Here are two examples:
I have noticed two trends recently and thought I would post my findings.
My cousin received a necklace with a 3-D crown being the pendant this christmas. I also noticed in a magazine i was flipping through there was a keychain that had a crown charm. The two examples below are the just a couple that I have come across. These ones are very glitzy though. The ones I've noticed are more rustic almost with a hint of goth.