Ohhhh creepy. Talk about taking the phrase "giving yourself to someone" a little to seriously -
A wedding ring made from your bone:
The process
1. Extract bone chips from jaw. Rinse.
2. Place bone cells in ring-shaped bioactive ceramic scaffold.
3. Feed liquid nutrients and culture in a temperature-controlled bioreactor for six weeks.
4. After coral-like bone forms fully around scaffold, pare down to final ring shape and insert silver liner (for engraving).