Acetone, found in nail polish remover, breaks down the adhesive, allowing it to be removed from the surface of your skin. Take a small dish and a bottle of nail paint remover with you. Fill the dish halfway with acetone. Place the glued piece of jewelry in the dish and let it soak for about 30 minutes. Rinse off the paint under running water and dry with a towel. Glue can also be removed with an acid such as vinegar or bleach. Mix equal parts vinegar and water and soak the item in this mixture for several hours or boil it in a pot of water with some salt for 15 minutes. Remove from the heat and allow to cool completely before removing from the container. If all else fails, try sandpaper. Sandpaper will not damage your skin and can help remove glued items that cannot be removed any other way. Just be careful not to go over what you want to keep!