Scientists from the University of Valencia, the University of Castilla La Mancha and the University of York have analyzed 5 knives of knives of the Age of Iron Iberian, and have shown that materials such as ivory, amber and the pond. Ivory was the material of what they were made, the amber was used to decorate and the pond to hook the amber to the handle. This is a pioneering study when it comes to exploring the material culture of the Iberian people.