Yaronia gestroi is a species of sea snail, a marine gastropod mollusk in the family Colloniidae.

encircled by minutely granulose lirae, with smaller ones intercalated.

The penultimate and last whorls contain a median series of reddish-brown quadrangular maculations or have the spiral lirae articulated with brown.

The outer lip is acute, slightly sulcate, with dots of carmine.

[3] This species occurs in the Red Sea and in the Indian Ocean off Madagascar.