Is this not a fabulous idea? Instead of a tan line, develop a heart line. The heart is raised in the inner part of the ring so that over time you develop a semi-permanent heart imprint on your finger. You can also have words imprinted. Purchase at Yun Jung Yun Shop. I don't know how you would DIY something like this unless you were a jewelry maker so I would recommend checking them out! This might a great idea for a wedding band since they don't need to have a diamond.