LAS VEGAS, Nev. /ScoopCloud/ -- The diamond necklace from an ex, the gold watch that sits in your jewelry box, the ruby necklace that you loved-a decade ago. We all have jewelry that we no longer wear. Selling your old jewelry is an option, but it can be hard to know how and where to get started. Here are a few tips from the American Gem Society (AGS) on getting the most from your rings, earrings, bracelets, and necklaces.