 Scientific studies carried out on a Bélmez face were performed by the "Instituto de Cerámica y Vidrio" or ICV (Institute of Ceramics and Glass), with samples from two of the faces recovered by Father J.M.Pilón's team in September 1990.The samples, one 30 milligrams, the other 60 milligrams, were subjected to various tests such as granulometric, mineralogical and chemical.