An ink set for ink-jet recording, which provides a vivid and sharp ink-jet recorded material with no bleeding, is composed of a plurality of pigment inks and configured such that the average particle diameter of a pigment contained in any ink precedently landing on a recording medium is less than that of a pigment contained in another ink subsequently landing on the recording medium, and such that at least two pigment inks are different in average particle diameter of the pigment contained therein to each other.