in the center is a gold metal ring held between 2 plastic gold slider beads 

(the color match is pretty spot on, despite being different materials),  

and adjusts in back with gold-tone claw clasp and chain.   

adjusts between 12 to 15",  

so best for necks about 11 to 14.5" around.   

new, in baggie. 

I also have this necklace in red, in another listing in my store.