How do I identify vintage rhinestone jewelry?

To identify vintage rhinestone jewelry, look at the back, clasp and other inconspicuous areas in search of a maker's mark. By definition, vintage jewelry is between 20 and 99 years old, so you'll need a rough idea of when the maker produced your item to determine if it is vintage. You can begin the dating process by researching the maker using trusted online resources and looking at images of its pieces from over the years. Alternatively, a certified appraiser or knowledgeable dealer can help you with the process. Shop a large collection of vintage costume jewelry on 1stDibs.