dot.
Luck is nonbinary, and o, such pips —
i: pocket • ii: knuckle • iii: flame • iv: button • v: twine • vi: shard • vii: marble • viii: prism •
ix: shell • x: vein • xi: brow • xii: yarrow • xiii: dot • xiv: bolt • xv: hammer • xvi: bone • xvii: lake