Smaragdia purpureomaculata is a species of sea snail, a marine gastropod mollusk in the family Neritidae.

[2] This species’s shell has been described as a thin sculpture, feeling smooth apart from on the very fine growth lines.

Ovate in shape, the shell has a subtle level of translucency, with a whitish colour and murky yellowish-green spiral bands.

[2] The length of the shell attains 2.8 mm.

This marine species occurs in the Gulf of Aqaba, Egypt.