Glitter Coating?

I got some inspiration for a piece of jewelry today, but I wanted to ask for some advice first. I'm wanting to coat part of a safety pin in glitter as one part of the piece. I'm considering using mod podge to stick the glitter on initially, but once it dries, what would be best to use to coat it so the glitter doesn't just rub/fall off again? Would just putting mod podge over it once it dries be best? heh If anyone's ever done anything similar and has any advice, I'd be thrilled to have it! :)