DO NOT ORDER if any of the below descriptions would make you unpleasant
Brass is a natural material, it will oxidize and form a patina or tarnish when it exposed to air or moisture. You can use sandpaper to bring its luster back or clean it in an eco-friendly way, such as lemon juice.
Each earring is individually engraved & mounted, variations may be presents that add to the uniqueness of each earring. The image engraved might slightly off center & might see glue marks around the brass.
Suggest removing your earrings before contacting water or using chemicals.