Maddy's Necklace of Shielding

The Diadem was given to Maddy as a gift from Sam after they became close with each other in the musical. The Necklace was created by Sam's Grandmother and has been shown to create an impenetrable shield around the wearer when activated, which has shown to be strong against dark magic.

This was cracked during The Battle of Addams, but was later repaired by Sam's Grandmother.

(Necklace of Shielding on the right)