The ornamental design for a two-piece ring, as shown and described.
FIG. 1 is a front top perspective view for a two-piece ring, showing my new design in an assembled form, the rear top perspective view being a mirror image;
FIG. 2 is a front elevational view of FIG. 1 thereof, the rear elevational view being a mirror image;
FIG. 3 is a left side elevational view of FIG. 1 thereof, the right side elevational view being a mirror image;
FIG. 4 is a top plan view of FIG. 1 thereof;
FIG. 5 is a bottom plan view of FIG. 1 thereof;
FIG. 6 is a front top perspective view of the two-piece ring of FIG. 1 in a partially separated form thereof; and,
FIG. 7 is an exploded view of the two-piece ring of FIG. 1 thereof showing the two segments separated apart.
The broken lines indicate unclaimed portions of the design and form no part of the claimed design.