These earrings are the "Wild Lily" design by the late artist and designer Laurel Burch.
Known for her vibrant, whimsical artwork, this specific set features cobalt blue cloisonné enamel with a periwinkle blue lily and gold-tone accents. These are vintage pieces, typically dating back to the 1980s.
Design Name: Wild Lily.
Material: Cloisonné enamel on gold-tone metal.
Variations: While your pair is cobalt blue, this design was also produced in colors like lavender, pink, and purple.