The early 1920s in Moscow precipitated radical forms and conclusions. Within Suprematism, the square had completed its argument. Geometry, purified and absolute, had reached a point of internal exhaustion. Ivan Kliun’s Spherical Suprematism, executed between 1922 and 1925, occupies that narrow interval when a movement ceased to expand and was compelled to transform. This painting does not oppose Malevich; nevertheless, it absorbs him. Flatness dissolves into curvature, form yields to radiance, and abstraction migrates from the object to its aura. The proposition is neither rhetorical nor speculative. As Kliun posited, colour exists only insofar as light permits it. In this sense, the painting records an inevitability rather than an innovation, a historical consequence rather than an individual gesture.