Locket

The locket is a junk item in Fallout 4.

Gameplay
An oval shaped silver locket belonging to Blake Abernathy's deceased daughter Mary. It can be retrieved during the quest Returning the Favor.

Crafting
The locket can be broken down into its individual components for use in crafting:

Location
At USAF Satellite Station Olivia, in a red toolbox, in the last room of the hideout's basement.