Cosmati, the typical ornaments made by Roman marble workers of XII and XIII Century, adorned the most important European churches and noble buildings for centuries. Rotations and symmetries, following a perfect mathematical order. An extensive study of Cosmati mosaics allowed Sicis to interpret and develop this art. This has led to the creation of the Cosmati Collection, made of marbles, glass, gold and other materials. Soon it has become one of the most appreciated collections by worldwide architects and designers