Margarella violacea is a species of small sea snail, a marine gastropod mollusk in the family Calliostomatidae, the top snails.

[1] The animal is pale beige in color and has a pair of cephalic tentacles.

[1] The purplish-pink shell is imperforate, orbicular-conical, thin and smooth, and is covered in fine pink or dark pink spiral lines.

The rounded-quadrangular aperture is angular above, and subangular at the base of slightly thickened and arcuate columella.

[1] This species occurs in the Atlantic Ocean on the coast of Argentina and the Falkland Islands, i.e. in the Magellanic Region.