probably Mayan, Late Classic, ca. 700-800 CE, the amorphous-shaped greyish stone carved in low relief with a seated figure holding a hooked ritual instrument, pierced laterally so as to fit as a link on a belt or large necklace
h. 3-3/8 w. 2-1/4 d. 1/2 in.

with old tacky residue on back (easily removed)