A set of four glass coasters that create mesmerizing moiré patterns when stacked and turned. When not in use, arrange the coasters to transform a simple dotted grid into a blooming circular array or a wavy line into a dazzling optical effect.

Available in dots, waves, or mixed a mixed set of both.

Material: Etched glass.

Dimensions: 3.75 x 3.75 x 0.2 inches.