Vintage Jeff Lieb Clip On Earrings Black & Clear Gem - Repair Needed

Vintage Jeff Lieb Clip On Earrings Black & Clear Gem - Repair Needed I have no idea how these earrings fit together or if parts are missing. Black is worn off in multiple areas. Some possible makeup stuck in rear that remains despite cleaning. Preowned vintage, sold as shown - I am unsure of material type(s) because of this, this includes what the gems are made out of. Pictures show different angles for you to review - while I attempt to note any defects, some tarnish/signs of wear may be visible that are not otherwise stated. If you have any questions please feel free to drop me a message.