Optical Illusion Bookmarks

Swirling black and white lines twist into a mesmerizing vortex at the center of these Optical Illusion Bookmarks, designed by Loupes. The stark monochrome palette is deceptively simple — just pure black and crisp white — yet the radiating curves create an almost dizzying sense of depth and motion, as if the flat surface is folding in on itself. The design plays brilliantly with perception, making the eye chase the spiral inward before the pattern releases outward again in flowing waves. Printed without an AMS multi-material system, the two-tone effect is achieved through careful filament management, and the result is impressively clean — sharp transitions between black and white with no muddying at the edges. The layered print surface catches light in subtle ways, giving the raised texture a slight dimensionality that reinforces the optical illusion effect. Tucked into a book on a reading table or propped beside a stack of novels on a shelf, these bookmarks become small conversation pieces in their own right, the kind of functional object that stops a visitor mid-sentence to ask, "wait, is that moving?"