Could it be CARLA? This Carla Corp. makes a lot of gold earrings, apparently. I haven't found their mark to see if it looks similar. https://carlacorp.com/
Looks like it is "Carla". From the link below, "Carla has been manufacturing fine quality earrings, pendants, and bracelets in the USA for over 50 years. Fine jewelry is defined by its quality. That is why every Carla design comes with a Lifetime Guarantee" https://www.millsjewelers.com/product-category/designers/carla-2/ Also, if you google "Carla earrings", there are a lot of other ones marked by the same name. Here's a screen cap of one that has a better view of the mark:
Great find, @tie.dye.cat . Looks like that is it. I believe it is the same company whose site I linked earlier? Probably.