Sterling silver triangle onyx MOP earrings

Vintage sterling silver triangle earrings with mother of pearl, black onyx and black enamel and cross pattern of marcasite. Really nice color in the mother of pearl. Seems that the earrings were originally clips, but the clips have been removed and replaced with studs. Has some glue residue because of this, however it is on the back and does not show on the front. Confirmed sterling through acid testing, 7.5/8 x 1 1/4 inches, 14.28g.