Marco Leona is the David H. Koch Scientist in Charge of the Department of Scientific Research at the Metropolitan Museum of Art. He studied in Italy where he obtained a Laurea in Chimica (M.Sc., Chemistry), and a Ph.D. in Crystallography and Mineralogy from the Universita’ degli Studi di Pavia. Prior to joining the Metropolitan Museum, Leona worked at the Freer Gallery of Art in Washington, D.C., and at the Los Angeles County Museum of Art (LACMA). Leona pioneered the use of Surface Enhanced Raman spectroscopy to investigate natural and synthetic dyes in works of art. Besides his work at the museum, he teaches analytical chemistry at the Conservation Center of New York University’s Institute of Fine Art.