Pendants will load located and smartparented to any FKDesign's Necklace present in scene.
Automatically will fit the current included Necklace.
For attaching to other elements you would need to do manual tweaking.
If you want to use any other FK's pendant you should use the Necklace that comes without pendant and then load the desired piece. It will fit and will be placed correctly.
Materials colors and intensity may vary depending the lights used.