You'll need to do a little research on what kinds of jewelry to look for that will add value to your collection. In the beginning, I only bought pieces that appealed to me. I soon discovered that sometimes the pieces that I dislike could have great value. You will need to know how to spot these pieces and a little research goes a long way. Cameos can be very valuable.
Scenic cameos can be generally more expensive than bust cameos.
Scenic cameos usually include a scene of a cottage, bridge and girl. Glass beads are always a good value and many places will buy them. Always look carefully at the jewelry that you find at yard sales and thrift stores. I've found many pieces of gold and made quite a nice profit on them. One time I found a watch that I paid 1.00 for and I sold it to a jeweler right away for 50.00.