The fore wings are black. The wing leading edge is green. In back side of wing there is a large, triangular, green area.
The underside of Ornithoptera goliath is yellow and greenish. The veins and the edge are black. At the outer edge there are some small, black spots.
The hind wings of Ornithoptera goliath are golden. The edge is black. Between the golden core of the wing and the black edge there is a thin green line. There are some green spots in the golden area.
The underside is a copy from upside, but the edge is green. The spots in the golden area are black.
The body (abdomen) is yellow. Head and thorax are black. The underside of thorax has a red hair-coat.