One of the hooks looks like it's about to break, and they appear to be covered in some kind of sticky film or residue...It looks like I'll have to return it.
Sure enough, as I was placing it back into the box to get ready to ship and return, the hook broke. I will provide additional information once I receive the replacement.

Updated review: I received the replacement pair, and the hooks seem to be just fine this time (so plus one star from the last review). However, the earrings are still sticky! The replacement pair also has some kind of sticky, gluey residue that's somewhat resistant to being wiped off. I'll do my best to clean them, but I'm hesitant to use any kind of adhesive remover or jewelry cleaner since I don't want to disturb the finish.

Anyway, despite whatever is coating them, it's a nice simple pair of earrings for everyday wear.