Minolia caifassii is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.
The height of the shell attains 5 mm, its diameter 5 mm. The umbilicated, very fragile shell has a conoidal shape. The 5½ whorls are angular and flat above. The first 3 whorls are smooth, the remainder minutely cingulate, granose, and obliquely striate. They are ornamented with chestnut-brown radiating spots and whitish. The body whorl is angular at its base, convex below, and ornamented with 7 minutely grained concentric lirae. The ample umbilicus is scalariform, cingulate, granose, and bounded by a white crenate riblet.[1]
This species occurs in the Red Sea and the Gulf of Aden.