Op art (optical art) developed in the 1960s as an artistic style that used geometric shapes to generate optical illusions. With a nod to the genre, designer Remedios Sim�n created Spiro, a charismatic pendant whose frame contains a mass of irregular wood veneer spirals.; Available in six outer shell versions (cherrywood or red veneer, large acrylic white or black, medium acrylic white or black), Spiro is an impressive light with an enchanting aura. Similar to op art, Spiro plays with the physiology and psychology of human perception, its charm utterly irresistible.