Second, know your market. Third, know your competition. Check out similar merchandise in stores, flea markets and other places that sell jewelry like yours, and that target customers like the ones you want to target. Fourth, mark up and price your products so that you will make a sufficient profit. Remember, it's always easier to lower a price, than raise a price.
Customers smile at lower prices, but frown on raised prices.
Determine on average, how many hours it takes to make the piece. Figure out the hours to the nearest quarter of an hour. The number of hours times the hourly rate is your cost of labor. It's always difficult to recoup your labor, that is, the amount of time you put into making a product. You usually have to discount your labor.