In 1990 Valentini created the exhibition "La misura, il tempo" or The measure, the time at the Panicali Fine Art in New York. He has established himself with a series of abstract sculpture works on wood and paper, all characterized by a precise sense of geometry. This is a Giclée Art Print on heavy linen paper with metallic ink and embossing. Using archival-quality inks onto premium canvases, giclee printing guarantees incredible detail, phenomenal quality, and vibrant colors.