If you are in the United States Coast Guard you can also buy a ring to represent your time spent or the time you are currently serving. Just like the Marines, Army and Navy, there is a ring specifically for you!
Coast Guard rings will most likely come with the official United States Coast Guard insignia on it to represent that division of the armed forces. Like the other rings mentioned, Coast Guard rings can also be customized to your liking and generally run around the same price as the other division's rings with the same type of metal choices. You can even choose your side panels on the ring, generally most ring retailers have over 20 Coast Guard side panels to choose from ranging from USCG Officer Badge to USCG Enlisted Badge and many more!