Anniversaries come in two forms: pre-wedding and post-wedding. If you're a couple that is committed but has no plans for marriage, use your anniversary as an opportunity to give a fine jewelry gift with some longevity. For instance, offer a ring or necklace in your partner's favorite color or style, which they can enjoy wearing for many occasions.
If you're married, there's a traditional list of anniversary gifts for every year after your wedding. For example, you can opt to get your spouse the traditional gift of a wooden item on your fifth wedding anniversary. However, any anniversary is also a great time to give a piece of jewelry that will last a lifetime.