If they are all single earrings, just one, not two, I would sell as a lot for craft/repair.
Certainly remove any that are silver or gold if there are any.
If some of the single earrings are signed you might want to point those out. But very few designer earrings are worth much if one of the pair is missing.
Just take a good photo of everything laid out so people can see what they are getting. People do love these for crafts, making jewelry trees, etc.
Best of luck.
An estate sale is my natural habitat...