I think these are acrylic or lucite. Cute and sparkly! I believe these were only worn once by my small, but the post of one is sliiightly bent. Otherwise in great condition! We also have a cute pompom unicorn keychain from MoIC that is unused…check out my closet! By Vinca x Museum of Ice Cream. (I am not sure they make these still? And believe you can only purchase in store, not online!)