A DEVELOPMENT OF the "chevrons," the Diamonds (1964-69) were Noland's first shaped paintings. The interaction of color and layout involved the picture shape itself.

Untitled, 1965

The "Square Diamond" format (1964-65) took the chevron motif into the domain of the shaped picture. In this format the sides of chevrons aligned with the sides a square picture hung from its corners as a diamond. The chevron motif sprang into being only when the square canvas was hung this way; as a horizontal square the chevrons remained inert, equal-sided "L" shapes. Because external shape and orientation determine the character and expression of depicted shape, this reversed the terms of traditional art. Picture shape had previously been a passive container; in the square diamonds an active shape energized what would otherwise have been a passive motif.

Approach, 1966

Although simple in appearance, the "Narrow Diamonds", which followed in 1966-67, are some of Noland's most brilliant and radical paintings. In effect the square diamond motif was squeezed into a narrow, elongated panel: instead of containing an emblematic motif, the painting itself became emblematic.

Instead of chevrons, narrow bands of color aligned with a parallel pair of sides of a diamond shaped picture. The paintings were often in the proportion of 2 x 8 feet, (in which case called "Needle Diamonds") but occurred in other proportions as well. The tension imposed by parallel diagonal bands recalled the "asymmetrical chevrons," and a dynamic chevron image is implied by the diagonal termination of the bands at the picture edge. (By way of comparison, recall how passive and flaccid were so many geometric band paintings of the '60s.)

In these paintings color, used with the precision of notes in a scale or chord, was often arranged in equal steps from dark to light, this unlikely arrangement dissected chiaroscuro, transforming it into measured relations of color. Whereas shading in abstract painting usually punched holes in the picture surface, here eccentric picture shape held the shading flat.