I have gotten quite a few emails asking my opinion on how to price jewelry. I would like to turn you over to the thorough and wonderful Tammy Powley at about.com/Jewelry Making. She really breaks it down and points out many important things to remember when pricing your jewelry.
This breakdown will be different for each person. Are you selling wholesale or retail? What is your over head? Is this just a hobby and you are selling this to a friend or do you want to develop a thriving business from this? You gotta consider all this, read Tammy's article and take it from there. Good luck!