I am offering an updated version of this ring on my etsy store at http://cymonsgames.etsy.com/ 3D printed on my home printer.
A smaller version of my TARDIS ring for smaller fingers (to save you material cost). US ring sizes 0-7 available.
TARDIS model modified from version created by user Gossamer on thingiverse: http://www.thingiverse.com/thing:13109
1.444 w x
2.656 d x
0.569 w x
1.046 d x