If you have a piece of jewelry that you feel may be of some value, you should use a jewelry appraisal service. There are two main reasons why you should get your jewelry appraised — resale value and insurance. If you are attempting to sell your jewelry, it is crucial that you get it appraised in order to sell the piece for what it is truly worth. In order to insure any piece of jewelry it first must be appraised, so that the insurance company can know how much the piece is worth.