Calliostoma conulus is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

It has a yellow or delicate flesh color, with obscure clouds or macula.

The base of the shell is flat, smooth, save for 3 to 6 concentric articulated riblets around the axis.

There are about 10 flat whorls, separated by a linear suture with a distinct narrow supra-sutural fasciole.

[2] This marine species occurs in European waters, off Spain and Portugal and in the Mediterranean Sea off Greece and Sicily; in the Atlantic Ocean off the Canary Islands, Madeira and the Azores.