Star of Hoboken

The Star of Hoboken is a diamond appearing in the 1987-1996 animated series. In the episode Napoleon Bonafrog: Colossus of the Swamps, Shredder offers it to Big Louie in exchange for the anti-freeze.

Big Louie later learns Shredder has given him nothing else than glass, and gets angry at Shredder for not giving him the real diamond.