How can you tell if crystal is valuable?

To tell if crystal is valuable, you can either get a rough idea from conducting online research or consult a certified appraiser or knowledgeable antique dealer. If you prefer to research your piece yourself, consider the maker, type, age and condition of your crystal wares. You can look at the historical selling prices for comparable crystal to estimate approximately how much your piece may be worth. Find a large collection of crystal wares on 1stDibs.