To determine the color of a locket, you'll need more information about the locket itself or the context in which it appears.
For example, if you are thinking of a locket in a book, movie, or show, please provide the name of the work or the character.
If you are thinking of a locket in a specific setting, please provide more details about it (e.g., the time period, the person who owns it, etc.).
With more information, I can help you determine the color of the Gilbert locket.