Ronald Mallory (American, 1939-2021). Untitled (Mercury Sphere) (1969). Sculpture, Mercury Suspended in Acrylic Resin, Stainless Steel, Plastic.

Height 5 in., Width 5 in.. Signed, numbered 35/150. Sculpture sits on 2 in. Plexi Stand. Striking kinetic-style sculpture by American artist Ronald Mallory featuring liquid mercury suspended within a clear acrylic resin sphere. The hemispheric division creates a dramatic visual contrast between the reflective metallic mercury and the transparent lower section, where prismatic refractions and internal light play enhance the optical effect. Executed in 1969, the work reflects Mallorys engagement with perception, material experimentation, and postwar American sculptural innovation. The use of industrial materials—mercury, acrylic, stainless steel, and plastic—aligns with the artists exploration of science, motion, and minimal form during the late 1960s.