I recently came across this fantastic ring on Craft. It was made by jewelry designer Shannon Larratt for his fiance, Caitlin for her birthday. She gave him permission to use her wisdom teeth after she had them yanked and he did just that, welding a ring that holds one of her teeth as well as two moonstones. You can read more about how he designed this toothy ring on his blog. He is also the owner of Zentastic Art and Custom Jewelry.