Mixing and matching earrings has been a thing for a long time and is in keeping with the trend for multiple piercings, and mixing and matching.
This serpent earring by Melanie Auld is perfect if you have more than one ear piercing and like to do just that. It can be purchased as single earring for USD$90, or as a pair for a slight discount of USD$170. This comes in 14k yellow gold.