This crown spans 3.937" or about 100mm. I've made this slightly smaller version so that if you like the precious metals it is possible to print them. I highly recommend calculating the width of crown you need for your head. You can do that using the same math in this simple example I made: http://cosmic-empress.deviantart.com/art/Proportionality-208348866 But instead of using your leg I recommend using the width of your head. Unfortunately, I haven't gotten any pictures of the crown on my head, but you can see it in this video: www.youtube.com/watch?v=o2EAEnRAP8E (time ~1:51)
If you would like this crown to be made from a variety of materials please contact me. I can separate the gem, heart, and bottom beads. You will need to buy each object separate then and glue them together.