A friend of mine mother who is no longer with us acquired these earrings some 20 to 25 years ago in the SW United states.  The sterling shows a lot of work on the front and may be Native American, but I'm not sure.  The coral and turquois I think were added at a later date.   The sterling earrings are 1 inch wide and 1 and one eight inches tall.  Both remain in excellent condition.