Ferrofluids are colloidal suspensions of nanoscale magnetite particles that sprout the characteristic Rosensweig spike pattern when a strong external magnetic field overcomes surface tension. Here a high-subdivision icosahedron is displaced per-vertex in a custom GLSL vertex shader, using a sum of pointed inverse-square falloff fields from three orbiting virtual magnets. Surface normals are reconstructed by finite-difference sampling of the field so the metallic clearcoat material still shades correctly.