Guraleus amplexus is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.

They are provided with decidedly sinuous, strong, protractively slanting, almost sublamellar, axial ribs, of which 14 occur upon the first three and 12 upon the remaining whorls.

In addition to the ribs, the whorls are marked by narrow, deeply incised, spiral sulci, which are about one-third as wide as the flat spaces that separate them.

The base of the shell is protracted, marked by the strong continuations of the axial ribs, which become evanescent at the insertion of the columella, and 23 incised spiral sulci, which are a little more distantly spaced on the columella than on the posterior half of the base.

The aperture is decidedly channeled anteriorly, posteriorly with a strong notch immediately below the suture.