There are many great shops on Etsy that sell map jewelry of different sorts, but this Etsy seller creates custom heirloom pieces set in sterling.
The "Journey" or "Daydream" bracelets above are my favorites. You can select your own journey or daydream and have it custom made for you. The maps could be of places you have visited, lived, or even dreamed of seeing. They would make wonderful gifts, and also meaningful pieces of jewelry as a gift to yourself.