An ink-jet ink set having a first liquid and a second liquid, wherein the first liquid includes a colored particle, a dispersant, a water-soluble solvent, and water, the second liquid includes a water-soluble solvent, water, a coagulant capable of coagulating or insolubilizing the first liquid, the colored particle has a core-shell structure in which a core part is coated with a shell part, the core part includes an uncolored component, and the shell part includes a colored component. An ink-jet ink tank, an ink-jet recording method and an ink-jet recording apparatus utilizing the ink-jet ink set.