It is very nice to give precious things such as gold and a ring, I like it too, but for me I focus on simple things that belong to my friend, I celebrate and support him, I paint for him a beautiful painting that expresses my love for him, going out together. Sometimes we go to great lengths to find keys of people's hearts while they are inside of us
Food is generally a good way to a heart - through the stomach :)
Normally, I don't give these kinds of things as gifts, we do more basic and useful stuff - but this is meant to both be worn and last a lifetime.