Astele monile, common name the Australian necklace, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

The shell has an erectly conical shape but is rather swollen at the base.

It is transparent white, encircled by a necklace of violet spots.

The whorls are concavely sloping, spirally ridged.

The necklace of violet spots has an exceedingly pretty appearance on the delicate transparent ground of the shell.