This is what the entry from the Zecchi site looks like to help in ordering: “ Cobalt Green Deep. Chemical composition: Ossidi Cobalto e Zinco (Series: 12) .” Here is our best guess at the equivalent in Italian. This is from the Italian portion of the site: “ VERDE COBALTO SCURO. Composizione chimica: Ossidi Cobalto e Zinco (Gruppo: 12).”