This a lovely pair of Sonora Sunrise earrings. Sonora Sunrise is made up of Chrysocolla, which is the blue-green color, and Cuprite which is the red. You will find that it is also called Sonoran Sunrise and Sonoran Sunset.
The pieces have been oxidized (blackened) to bring out the design. The back has been stamped with the .925 sterling silver hallmark and maker's mark.
Earring post in the back.
The earrings measure 1-11/16 inches (43mm) from the very top to the bottom.