gauged earring question.

[plaidslothbutt.livejournal.com]

i just got some old clip on earrings that i'd like to turn into gauged earrings. i already pulled the clips off the back, so i just need to gauged pieces and i'll be set...so the question is, does anyone know of a site that has gauged backings for earrings or any other alternative?
thankles.