CEMENTED CARBIDE AND CUTTING TOOL

A cemented carbide includes a hard phase and a binder phase, wherein the hard phase has first hard phase grains each composed of tungsten carbide, second hard phase grains including a core portion and a rim portion that covers at least a portion of the core portion, a composition of the core portion is represented by M1x1W1-x1C1-y1Ny1, a composition of the rim portion is represented by M2x2W1-x2C1-y2Ny2, each of the M1 and M2 is at least one metal element selected from a group consisting of a group 4 element, a group 5 element in a periodic table, chromium and molybdenum, the x1 is 0.70 or more and 1.00 or less, the y1 is 0 or more and 0.90 or less, and the x2 is 0.20 or more and less than 0.70, the y2 is 0 or more and 0.90 or less, and the binder phase includes at least one iron group element selected from a group consisting of iron, cobalt and nickel, and a 50% cumulative number grain size of the second hard phase grains is 0.01 µm or more and 1.0 µm or less.