FIG. 1 is a top, front, and right side perspective view of a marquise stone;
FIG. 2 is a bottom, rear, and left side perspective view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof; and
FIG. 5 is a left side view thereof, the right side view being a mirror image thereof; and,
FIG. 6 is a front side view thereof, the rear side view being a mirror image thereof.
The broken lines in FIGS. 1, 2, 4, 5, and 6 depict portions of the marquise stone that form no part of the claimed design.