I have a Morse Code ring in aluminum and I love the way you can add personal touches in a discreet way. This specific ring was made for my childhood best friend. 

Of all the friends I've had, she has been the longest...we met in kindergarten and were friends in elementary school, then high school, then we roomed together in college. Now as adults, jobs and life have taken us apart but I will always consider her one of my closest friends. Maybe we'll end up rooming together in a nursing home one day? I hope so! Miss you very much, friend.