The ornamental design for a pair of earrings, as shown and described.
FIG. 1 is a front and right side perspective view of a pair of earrings showing my new design in an open position;
FIG. 2 is a front and right side perspective view of a pair of earrings thereof in a closed position;
FIG. 3 is a front elevational view thereof in a closed position;
FIG. 4 is a front elevational view thereof in an open position;
FIG. 5 is an enlarged partial view of the end of the earring shown on the left in FIG. 1;
FIG. 6 is an enlarged partial view of the clasp feature of the earring shown on the left in FIG. 1 shown in an open position;
FIG. 7 is an enlarged partial view of the clasp feature of the earring shown on the left in FIG. 1 shown in a closed position; and,
FIG. 8 is a front and right side perspective view of the pair of earrings of FIG. 1. shown with the detachable portion removed for completeness of illustration.