In 1816, a tooth said to have belonged to Newton was sold for £730^[163] in London to an aristocrat who had it set in a ring.^[164] Guinness World Records 2002 classified it as the most valuable tooth in the world, which would value approximately £25,000 (US$35,700) in late 2001.^[164] Who bought it and who currently has it has not been disclosed.

https://en.wikipedia.org/wiki/Isaac_Newton