If you are looking to buy jewelry at wholesale prices and sell it on at a profit then one group of people you could potentially target and make good money would be the craft and do it yourself jewelry lovers. These types are always searching for unique beads and jewelry supplies, even pearl jewelry and real gemstones that are inexpensive and can be made into costume jewelry although they incorporate genuine stones or metals.
There are discount jewelry outlets and cheap costume jewelry distributors who sell kits, supplies and millions of great ideas for cheap gifts, even cheap watches that you can add a custom strap to, or beads or chains to have a present that will impress the receiver. The point is that you must find a wholesale fashion jewelry company who will give you the prices that will allow you to add a markup and still offer good value.