To gain access to the alchemists' quarter, Lawrence asks Batos for a password to meet Diana. Upon his arrival, Lawrence is told that the pyrite has already been sold on credit. Diana, however, agrees to sell Lawrence pyrite instead and tells him that she will handle negotiations and contact him upon their completion. The next morning, Lawrence goes to the exchange with Amarti and receives fourteen Lumione gold coins, equivalent to three hundred Trenni silver coins, in accordance with their deal. The price of pyrite continues rising, worrying Lawrence.