Cluster of hearts, simple heart decoration.
It's designed by default to use AMS (the 3MF file will load two separate parts which will be uniquely colored), which allows it to have some of the white / secondary color detail on the back as well. Could be done in a single color of course.
It's most likely too big to be used as an earring, a pendant might work. I wouldn't scale it down too much farther than this because the white hearts without any infill are only a couple walls thick at best. It feels fairly durable at its current size!
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