Gemmula vagata is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.

The tall and narrow fusiform shell is white with the infrasutural keel somewhat reddish.

It contains 12 whorls, showing a moderately strong subsutural square-cut fold.

The aperture with the siphonal canal measures almost half the total length.

[2] This species occurs in deep water in the Indian Ocean from Aden to Andaman Islands and off Sri Lanka