Gaza superba cubana Clench & Aguayo, 1940 (basionym) Gaza cubana is a species of sea snail, a marine gastropod mollusc in the family Margaritidae.

The pale beige, discoid shell has a weak but marked spiral sculpture.

But the first two whorls of the teleoconch have a purple color.

The open umbilicus is only sealed for about 75% by the callus of the inner lip.

This species occurs in the Caribbean Sea and the Gulf of Mexico at depths between 329 m and 1080 m.