Ethminolia ornatissima is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.

The body whorl has at the periphery a zone, articulated by oblong brown squares, alternating with yellow spaces.

The upper and lower surface are more or less distinctly variegated with brown flames and spiral dots of the same color.

The whole surface of the shell is covered with radial striae, crossing the lirae and giving them a beaded appearance, especially near the suture and the umbilicus, where they form regular folds.

Its wall contains flat spiral lirae, crossed by much more crowded, radial, elevated striae, separated by a conspicuous angle from the basal surface.