Roni Horn at Hauser & Wirth Gallery

Roni Horn once said that glass can convey ‘the most ideal expression of color.’ In two same-but-different cast-glass sculptures at Chelsea’s Hauser & Wirth Gallery, a tranquil, blue form immediately invites visitors to draw near and marvel at the reflections of light on the water-like surface of a substance that is neither fully liquid nor solid. (On view through July 29th). Roni Horn, Water Double, v. 1, solid cast glass with as-cast surfaces with oculus, 132.1cm/52 inches (height), 2013-15.