Three cores of a conch shell. Chipped to remove the pieces of the outer shell.
Left, bottom row: possibly a ladle.
Vats: "Shell was worked with great skill, and every part of it was turned to account in the manufacture of dippers, cups, bangles, balls, cylinders, wavy rings, beads, discs, temple ornaments, inlays etc., etc.” (1940, p. 462)