These black and silver Agents of SHIELD charms, 12mm, sit beneath 8mm twisted hammered silver-plated circle connectors.  The earrings use silver-plated fishhook earwire and are 1" long.  
 
All metal used is hypoallergenic, nickel-free, and is sterling silver, silver or gold-plated, or stainless steel unless noted otherwise. Every item is handcrafted, custom-made, nothing mass-produced.