Triangle Gray from 1975 distills De Wain Valentine's signature mastery into an intimate, handheld scale. Cast in polyester resin, the triangular form captures and refracts light from within its translucent gray depths, creating the sense that illumination originates inside the object rather than playing across its surface. At just under twenty-eight centimeters at its widest, this is a work that rewards close attention, inviting the viewer to trace the slow gradations of tone and the razor-precision of its geometric edges, qualities that Valentine achieved through a painstaking casting process he developed himself using custom-formulated resins capable of retaining optical clarity at substantial thicknesses. Valentine emerged from the Los Angeles light and space milieu of the late 1960s and 1970s alongside figures such as Larry Bell and Peter Alexander, yet his commitment to resin sculpture was distinctly his own. Triangle Gray belongs to a body of work in which color, form, and material perception collapse into a single unified experience. The gray palette chosen here is neither cold nor neutral in practice; within the resin it takes on a luminous, almost atmospheric quality, shifting as ambient light conditions change throughout the day. The work is signed and accompanied by a certificate of authenticity from Almine Rech, providing solid provenance for the discerning collector. For those building collections focused on California minimalism or the phenomenological traditions of postwar American art, this piece represents a rare opportunity to acquire a fine example of Valentine's work at an approachable scale without any sacrifice of conceptual depth.