Here is how a jeweler makes a ring smaller if you have lost weight and your fingers are smaller and you need a smaller ring. Or if you bought a ring for your loved one and they need it made smaller, here is how they make it smaller. Interesting article about how your jeweler actually resizes your ring to make it smaller. Resizing of engagement rings is a fairly easy process. Here is how a jeweler makes a ring smaller, or how they resize a ring.