Since he had spent so much time working on the Burning Man icon, when Johnstone was thinking of what stone to find for his bride's ring, he remembered how fascinating he'd thought it was that there was actually a small piece of meteorite in the Burning Man underpinning. Johnstone contacted the dealer who had provided the piece of meteorite for the Burning Man platform, and in a cosmic stroke of luck, he learned that dealer actually had several pieces of the moon in his possession. Using 3D modeling with both Sketchup and Maya tools, Johnstone worked with jewelers to create a 3D mesh for the sizeable piece of "tranquillilyite." The 3D-printed ring, cast in white gold, is in the shape of a hand holding the ebony moon rock. More details and images of the wedding and the ring can be found here: http://3dprint.com/14276/3d-printed-wedding-ring-moon/

Below is a picture of the actual 3D printed ring with a piece of moon in the center: